{"id":5151,"date":"2022-10-14T18:07:38","date_gmt":"2022-10-14T18:07:38","guid":{"rendered":"https:\/\/www.studyzonebd.com\/math\/?p=5151"},"modified":"2022-10-14T18:56:36","modified_gmt":"2022-10-14T18:56:36","slug":"class-8-chapter-7","status":"publish","type":"post","link":"https:\/\/www.studyzonebd.com\/math\/class-8-chapter-7\/","title":{"rendered":"\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf"},"content":{"rendered":"\n

\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Eight (08) Math <\/a>Book Solution | Chapter <\/a>07 :Set | Class 8 math book Online Solution in Bangla (BD)<\/p>\n\n\n\n

\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed – PDF<\/a><\/h4>\n\n\n\n

\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/p>\n\n\n\n

\u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09b0 \u0997\u09a3\u09bf\u09a4 \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u09b8\u09ae\u09be\u09a7\u09be\u09a8<\/strong><\/span><\/h4>\n\n\n\n

\u09e7<\/strong>. <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6\u09c7\u09b0<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/strong> <\/strong>\u0995\u09a4\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) 1    \u0996) 2    \u0997) 3    \u0998) 4<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0996<\/p>\n\n\n\n

\u09e8<\/strong>. <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> <\/strong>\u09af\u09c7<\/strong> <\/strong>\u0995\u09cb\u09a8<\/strong> <\/strong>\u09b8\u09c7\u099f\u09c7\u09b0<\/strong> <\/strong>\u0989\u09aa\u09b8\u09c7\u099f<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {0}    \u0996) {\u2205}     \u0997) \u2205    \u0998) (\u2205)<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n

\u09e9<\/strong>. {0} <\/strong>\u09b8\u09c7\u099f\u09c7\u09b0<\/strong> <\/strong>\u0989\u09aa\u09be\u09a6\u09be\u09a8<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u0995\u09af\u09bc\u099f\u09bf<\/strong>?  <\/strong><\/p>\n\n\n\n

\u0995) 0    \u0996) 1    \u0997) 2    \u0998) 3<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0996<\/p>\n\n\n\n

\u09ea<\/strong>. S={x:x <\/strong>\u099c\u09cb\u09a1\u09bc<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> 1<\/strong>\u2264x\u22647} <\/strong>\u09b8\u09c7\u099f\u099f\u09bf \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09a8\u09bf\u099a\u09c7\u09b0 \u0995\u09cb\u09a8\u099f\u09bf \u09b8\u09a0\u09bf\u0995?<\/strong><\/strong><\/p>\n\n\n\n

\u0995) {2,3,4}    \u0996) {2,4,6}    \u0997) {1,3,5}   \u0998) {3,5,7}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983  \u0996<\/a><\/p>\n\n\n\n

\u09eb<\/strong>. <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb\u0995\u09c7<\/strong> <\/strong>\u09a4\u09be\u09b2\u09bf\u0995\u09be<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7<\/strong> <\/strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6<\/strong> <\/strong>\u0995\u09b0\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u0995<\/strong>) {x:x <\/strong>\u09ac\u09bf\u099c\u09cb\u09a1\u09bc<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> 3<x<15}<\/strong><\/p>\n\n\n\n

\u0996<\/strong>) {x:x, 48-<\/strong>\u098f\u09b0<\/strong> <\/strong>\u09ae\u09cc\u09b2\u09bf\u0995<\/strong> <\/strong>\u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9<\/strong>}<\/strong><\/p>\n\n\n\n

\u0997<\/strong>) {x:x, 3-<\/strong>\u098f\u09b0<\/strong> <\/strong>\u0997\u09c1\u09a3\u09bf\u09a4\u0995<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> x<36}<\/strong><\/p>\n\n\n\n

\u0998<\/strong>) {x:x, <\/strong>\u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> x2<\/sup><10}<\/strong><\/p>\n\n\n\n

—————————————————-<\/p>\n\n\n\n

\u0995<\/strong>) {x:x <\/strong>\u09ac\u09bf\u099c\u09cb\u09a1\u09bc<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> 3<x<15}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a7\u09b0\u09bf, A={x:x \u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 3<x<15}<\/p>\n\n\n\n

A \u09b8\u09c7\u099f\u099f\u09bf\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8 \u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b8\u09ae\u09c2\u09b9 \u09af\u09be 3 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u09ac\u09a1\u09bc \u098f\u09ac\u0982 15 \u098f\u09b0 \u099b\u09cb\u099f\u0964<\/p>\n\n\n\n

\u2234 3 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u09ac\u09a1\u09bc \u098f\u09ac\u0982 15 \u098f\u09b0 \u099b\u09cb\u099f \u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b8\u09ae\u09c2\u09b9 5,7,9,11,13<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f A={5,7,9,11,13}<\/p>\n\n\n\n

\u0996<\/strong>) {x:x, 48-<\/strong>\u098f\u09b0<\/strong> <\/strong>\u09ae\u09cc\u09b2\u09bf\u0995<\/strong> <\/strong>\u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9<\/strong>}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a7\u09b0\u09bf, A={x:x, 48-\u098f\u09b0 \u09ae\u09cc\u09b2\u09bf\u0995 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9}<\/p>\n\n\n\n

\u2234 A \u09b8\u09c7\u099f\u099f\u09bf 48 \u098f\u09b0 \u09ae\u09cc\u09b2\u09bf\u0995 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9\u0964<\/p>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7,<\/p>\n\n\n\n

48<\/p>\n\n\n\n

=1\u271548<\/p>\n\n\n\n

=2\u271524<\/p>\n\n\n\n

=3\u271516<\/p>\n\n\n\n

=4\u271512<\/p>\n\n\n\n

=6\u27158<\/p>\n\n\n\n

\u2234 48 \u098f\u09b0 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995 \u09b9\u09b2 1,2,3,4,6,8,12,24,48<\/p>\n\n\n\n

\u098f\u09ac\u0982 48 \u098f\u09b0 \u09ae\u09cc\u09b2\u09bf\u0995 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9 2,3<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f A={2,3}<\/p>\n\n\n\n

\u0997<\/strong>) {x:x, 3-<\/strong>\u098f\u09b0<\/strong> <\/strong>\u0997\u09c1\u09a3\u09bf\u09a4\u0995<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> x<36}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a7\u09b0\u09bf, A={x:x, 3-\u098f\u09b0 \u0997\u09c1\u09a3\u09bf\u09a4\u0995 \u098f\u09ac\u0982 x<36}<\/p>\n\n\n\n

\u2234 A \u09b8\u09c7\u099f\u099f\u09bf 3 \u098f\u09b0 \u0997\u09c1\u09a8\u09c0\u09a4\u0995\u09b8\u09ae\u09c2\u09b9 \u09af\u09be\u09a6\u09c7\u09b0 \u09ae\u09be\u09a8 36 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u099b\u09cb\u099f\u0964<\/p>\n\n\n\n

\u098f\u0996\u09a8, 3 \u098f\u09b0 \u0997\u09c1\u09a3\u09c0\u09a4\u0995 \u098f\u09ac\u0982 36 \u098f\u09b0\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u099b\u09cb\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b8\u09ae\u09c2\u09b9 3,6,9,12,15,18,21,24,27,30,33<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f A={3,6,9,12,15,18,21,24,27,30,33}<\/p>\n\n\n\n

\u0998<\/strong>) {x:x, <\/strong>\u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> x2<\/sup><10}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a7\u09b0\u09bf, A={x:x, \u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 x2<\/sup><10}<\/p>\n\n\n\n

\u2234 A \u09b8\u09c7\u099f\u099f\u09bf \u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u09af\u09be\u09a6\u09c7\u09b0 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09ae\u09be\u09a8 10 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u099b\u09cb\u099f\u0964<\/p>\n\n\n\n

\u09aa\u09c2\u09b0\u09cd\u09a3\u09b8\u0982\u0996\u09cd\u09af\u09be \u09af\u09be\u09a6\u09c7\u09b0 \u09ac\u09b0\u09cd\u0997\u09c7\u09b0 \u09ae\u09be\u09a8 10 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u099b\u09cb\u099f \u09a4\u09be \u09b9\u09b2\u09cb\u0983 -3,-2,-1,0,1,2,3<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f A={-3,-2,-1,0,1,2,3}<\/p>\n\n\n\n

\u09ec<\/strong>.<\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb\u0995\u09c7<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u0997\u09a0\u09a8<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7<\/strong> <\/strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6<\/strong> <\/strong>\u0995\u09b0\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u0995<\/strong>) {3,4,5,6,7,8}<\/strong><\/p>\n\n\n\n

\u0996<\/strong>) {4,8,12,16,20,24}<\/strong><\/p>\n\n\n\n

\u0997<\/strong>) {7,11,13,17}<\/strong><\/p>\n\n\n\n

——————————————-<\/p>\n\n\n\n

\u0995<\/strong>) {3,4,5,6,7,8}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8\u09b8\u09ae\u09c1\u09b9 2 \u09a5\u09c7\u0995\u09c7 \u09ac\u09a1\u09bc \u098f\u09ac\u0982 9 \u09a5\u09c7\u0995\u09c7 \u099b\u09cb\u099f \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0964<\/p>\n\n\n\n

\u09a7\u09b0\u09bf, \u09af\u09c7\u0995\u09cb\u09a8 \u099a\u09b2\u0995 x<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f {x:x \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 2<x<9}<\/p>\n\n\n\n

\u0996<\/strong>) {4,8,12,16,20,24}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8 \u09b8\u09ae\u09c2\u09b9 4 \u098f\u09b0 \u0997\u09c1\u09a3\u09bf\u09a4\u0995\u09b8\u09ae\u09c2\u09b9 \u098f\u09ac\u0982 \u098f\u09a6\u09c7\u09b0 \u09ae\u09be\u09a8 24 \u09a5\u09c7\u0995\u09c7 \u09ac\u09a1\u09bc \u09a8\u09af\u09bc\u0964<\/p>\n\n\n\n

\u09a7\u09b0\u09bf \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u099a\u09b2\u0995 x<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f {x:x, 4 \u098f\u09b0 \u0997\u09c1\u09a3\u09bf\u09a4\u0995 \u098f\u09ac\u0982 x\u226424}<\/p>\n\n\n\n

\u0997<\/strong>) {7,11,13,17}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8\u09b8\u09ae\u09c2\u09b9 \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09af\u09be\u09a6\u09c7\u09b0 \u09ae\u09be\u09a8 5 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u09ac\u09a1\u09bc \u098f\u09ac\u0982 19 \u098f\u09b0 \u099a\u09c7\u09af\u09bc\u09c7 \u099b\u09cb\u099f\u0964<\/p>\n\n\n\n

\u09a7\u09b0\u09bf, \u09af\u09c7\u0995\u09cb\u09a8 \u099a\u09b2\u0995 x<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f {x:x \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 5<x<19}<\/p>\n\n\n\n

\u09ed<\/strong>. <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u09a6\u09c1\u0987\u099f\u09bf\u09b0<\/strong> <\/strong>\u0989\u09aa\u09b8\u09c7\u099f<\/strong> <\/strong>\u0993<\/strong> <\/strong>\u0989\u09aa\u09b8\u09c7\u099f\u09c7\u09b0<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u0995<\/strong>) C={m,n}<\/strong><\/p>\n\n\n\n

\u0996<\/strong>) D={5,10,15}<\/strong><\/p>\n\n\n\n

————————————<\/p>\n\n\n\n

\u0995<\/strong>) C={m,n}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

C \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09b8\u09c7\u099f \u09b9\u09ac\u09c7 \u098f\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8\u0997\u09c1\u09b2\u09cb \u09a5\u09c7\u0995\u09c7 \u09a8\u09bf\u09af\u09bc\u09c7 \u0997\u09a0\u09bf\u09a4 \u09b8\u09c7\u099f\u0964<\/p>\n\n\n\n

\u2234 C \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u09b9\u09b2\u0983 \u2205, {m}, {n}, {m,n}<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u0989\u09aa\u09cd\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb=\u2205, {m}, {n}, {m,n} \u098f\u09ac\u0982 \u0989\u09aa\u09b8\u09c7\u099f\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=4\u099f\u09bf\u0964<\/p>\n\n\n\n

\u0996<\/strong>) D={5,10,15}<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

D \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09b8\u09c7\u099f \u09b9\u09ac\u09c7 \u098f\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8\u0997\u09c1\u09b2\u09cb \u09a5\u09c7\u0995\u09c7 \u09a8\u09bf\u09af\u09bc\u09c7 \u0997\u09a0\u09bf\u09a4 \u09b8\u09c7\u099f\u0964<\/p>\n\n\n\n

\u2234 D \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u09b9\u09b2\u0983 \u2205, {5}, {10}, {15}, {5,10}, {5,15}, {10,15}, {5,10,15}<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u2205, {5}, {10}, {15}, {5,10}, {5,15}, {10,15}, {5,10,15} \u098f\u09ac\u0982 \u0989\u09aa\u09b8\u09c7\u099f\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=8\u099f\u09bf\u0964<\/p>\n\n\n\n

\u09ee<\/strong>. A={2,3,4} <\/strong>\u098f\u09ac\u0982<\/strong> B={5,7} <\/strong>\u09b9\u09b2\u09c7<\/strong> A<\/strong>\u2229<\/strong>B <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) \u2205    \u0996) {0}   \u0997) {5,7}    \u0998) {2,3,4,5,7}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n

\u09ef<\/strong>. A={x:x, <\/strong>\u099c\u09cb\u09a1\u09bc<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> 4<x<16} <\/strong>\u098f\u09b0<\/strong> <\/strong>\u09a4\u09be\u09b2\u09bf\u0995\u09be<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {5}  \u0996) {4,6}   \u0997) {4,5,6}  \u0998) \u2205<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n

\u09e7\u09e6<\/strong>. P={x,y,z} <\/strong>\u09b9\u09b2\u09c7<\/strong>, <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> P-<\/strong>\u098f\u09b0<\/strong> <\/strong>\u0989\u09aa\u09b8\u09c7\u099f<\/strong> <\/strong>\u09a8\u09af\u09bc<\/strong>? <\/strong><\/p>\n\n\n\n

\u0995) {x,y}    \u0996) {x,w,z}   \u0997) {x,y,z}   \u0998) \u2205<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0996<\/p>\n\n\n\n

\u09e7\u09e7<\/strong>. 10 <\/strong>\u098f\u09b0<\/strong> <\/strong>\u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09b8\u09ae\u09c2\u09b9\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {1,2,5,10}    \u0996) {1,10}    \u0997) {10}    \u0998) {10,20,30}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n

\u09e7\u09e8<\/strong>. A={1,2,3}, B={2,a}, C={a,b} <\/strong>\u09b9\u09b2\u09c7<\/strong>, <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u0995<\/strong>) A<\/strong>\u222a<\/strong>B<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7, A={1,2,3} \u098f\u09ac\u0982 B={2,a}<\/p>\n\n\n\n

\u2234 A\u222aB={1,2,3}\u222a{2,a}<\/p>\n\n\n\n

          ={1,2,3,a}<\/p>\n\n\n\n

\u0996<\/strong>) B<\/strong>\u2229<\/strong>C<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

B={2,a}, C={a,b}<\/p>\n\n\n\n

\u2234 B\u2229C={2,a}\u2229{a,b}<\/p>\n\n\n\n

          ={2,a,b}<\/p>\n\n\n\n

\u0997<\/strong>) A<\/strong>\u2229<\/strong>(B<\/strong>\u222a<\/strong>C)<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

A={1,2,3}, B={2,a}, C={a,b}<\/p>\n\n\n\n

\u098f\u0996\u09a8, B\u222aC={2,a}\u222a{a,b}<\/p>\n\n\n\n

              ={2,a,b}<\/p>\n\n\n\n

\u2234 A\u2229(B\u222aC)={1,2,3}\u2229{2,a,b}<\/p>\n\n\n\n

                ={2}<\/p>\n\n\n\n

\u0998<\/strong>) (A<\/strong>\u222a<\/strong>B)<\/strong>\u222a<\/strong>C<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

A={1,2,3}, B={2,a}, C={a,b}<\/p>\n\n\n\n

\u098f\u0996\u09a8, A\u222aB={1,2,3}\u222a{2,a}={1,2,3,a}<\/p>\n\n\n\n

\u2234 (A\u222aB)\u222aC={1,2,3,a}\u222a{a,b}={1,2,3,a,b}<\/p>\n\n\n\n

\u0999<\/strong>) (A<\/strong>\u2229<\/strong>B)<\/strong>\u222a<\/strong>(B<\/strong>\u2229<\/strong>C)<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

A={1,2,3}, B={2,a}, C={a,b}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u2229B={1,2,3}\u2229{2,a}={2}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

B\u2229C={2,a}\u2229{a,b}={a}<\/p>\n\n\n\n

\u2234 (A\u2229B)\u222a(B\u2229C)={2}\u222a{a}={2,a}<\/p>\n\n\n\n

\u09e7\u09e9<\/strong>. <\/strong>\u09af\u09a6\u09bf<\/strong> U={1,2,3,4,5,6,7}, A={1,2,5}, B={2,4,7} <\/strong>\u098f\u09ac\u0982<\/strong> C={4,5,6} <\/strong>\u09b9\u09af\u09bc<\/strong>, <\/strong>\u09a4\u09ac\u09c7<\/strong> <\/strong>\u09a8\u09bf\u09a8\u09cd\u09ae\u09b2\u09bf\u0996\u09bf\u09a4<\/strong> <\/strong>\u09b8\u09ae\u09cd\u09aa\u09b0\u09cd\u0995\u0997\u09c1\u09b2\u09cb\u09b0<\/strong> <\/strong>\u09b8\u09a4\u09cd\u09af\u09a4\u09be<\/strong> <\/strong>\u09af\u09be\u099a\u09be\u0987<\/strong> <\/strong>\u0995\u09b0\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u0995<\/strong>) A<\/strong>\u2229<\/strong>B=B<\/strong>\u2229<\/strong>A<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

A={1,2,5}, B={2,4,7}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u2229B={1,2,5}\u2229{2,4,7}={2}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

B\u2229A={2,4,7}\u2229{1,2,5}={2}<\/p>\n\n\n\n

\u2234 A\u2229B=B\u2229A \u09b8\u09a4\u09cd\u09af\u0964<\/p>\n\n\n\n

\u0996<\/strong>) (A<\/strong>\u2229<\/strong>B)<\/strong>\u2019<\/strong>=A<\/strong>\u2019<\/strong>\u222a<\/strong>B<\/strong>\u2019<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

U={1,2,3,4,5,6,7}, A={1,2,5}, B={2,4,7}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u2229B={1,2,5}\u2229{2,4,7}={2}<\/p>\n\n\n\n

\u2234 (A\u2229B)\u2019=U-(A\u2229B)={1,2,3,4,5,6,7}-{2}={1,3,4,5,6,7}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

A\u2019=U-A={1,2,3,4,5,6,7}-{1,2,5}={3,4,6,7}<\/p>\n\n\n\n

B\u2019=U-B={1,2,3,4,5,6,7}-{2,4,6}={1,3,5,6}<\/p>\n\n\n\n

\u2234 A\u2019\u222aB\u2019={3,4,6,7}\u222a{1,3,5,6}={1,3,4,5,6,7}<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7,<\/p>\n\n\n\n

(A\u2229B)\u2019=A\u2019\u222aB\u2019 \u09b8\u09a4\u09cd\u09af\u0964<\/p>\n\n\n\n

\u0997<\/strong>) (A<\/strong>\u222a<\/strong>C)<\/strong>\u2019<\/strong>=A<\/strong>\u2019<\/strong>\u2229<\/strong>C<\/strong>\u2019<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a6\u09c7\u0993\u09af\u09bc\u09be \u0986\u099b\u09c7,<\/p>\n\n\n\n

U={1,2,3,4,5,6,7}, A={1,2,5}, C={4,5,6}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u222aC={1,2,5}\u222a{4,5,6}={1,2,4,5,6}<\/p>\n\n\n\n

\u2234 (A\u222aC)\u2019=U-(A\u222aC)={1,2,3,4,5,6,7}-{1,2,4,5,6}={3,7}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

A\u2019=U-A={1,2,3,4,5,6,7}-{1,2,5}={3,4,6,7}<\/p>\n\n\n\n

C\u2019=U-A={1,2,3,4,5,6,7}-{4,5,6}={1,2,3,7}<\/p>\n\n\n\n

\u2234 A\u2019\u2229C\u2019={3,4,6,7}\u2229{1,2,3,7}={3,7}<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7,<\/p>\n\n\n\n

(A\u222aC)\u2019=A\u2019\u2229C\u2019 \u09b8\u09a4\u09cd\u09af\u0964<\/p>\n\n\n\n

\u09e7\u09ea<\/strong>. P <\/strong>\u098f\u09ac\u0982<\/strong> Q <\/strong>\u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7<\/strong> 21 <\/strong>\u0993<\/strong> 35 <\/strong>\u098f\u09b0<\/strong> <\/strong>\u09b8\u0995\u09b2<\/strong> <\/strong>\u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09c7\u09b0<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u09b9\u09b2\u09c7<\/strong>, P<\/strong>\u222a<\/strong>Q <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

21 \u098f\u09b0 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995=1,3,7,21<\/p>\n\n\n\n

\u2234P={1,3,7,21}<\/p>\n\n\n\n

35 \u098f\u09b0 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995=1,5,7,35<\/p>\n\n\n\n

\u2234Q={1,5,7,35}<\/p>\n\n\n\n

\u2234P\u222aQ={1,3,7,21}\u222a{1,5,7,35}={1,3,5,7,21,35}<\/p>\n\n\n\n

\u09e7\u09eb<\/strong>.A={2,3,5} <\/strong>\u09b9\u09b2\u09c7<\/strong>–<\/strong><\/p>\n\n\n\n

i. A={x\u2208N: 1<x<6 \u098f\u09ac\u0982 x \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be}<\/p>\n\n\n\n

ii. A={x\u2208N: 2\u2264x<7 \u098f\u09ac\u0982 x \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be}<\/p>\n\n\n\n

iii. A={x\u2208N: 2\u2264x\u22645 \u098f\u09ac\u0982 x \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be}<\/p>\n\n\n\n

\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> <\/strong>\u09b8\u09a0\u09bf\u0995<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) i \u0993 ii    \u0996) i \u0993 iii   \u0997) ii \u0993 iii  \u0998) i, ii \u0993 iii<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n

# <\/strong>\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09a4\u09a5\u09cd\u09af\u09c7\u09b0<\/strong> <\/strong>\u0986\u09b2\u09cb\u0995\u09c7<\/strong> <\/strong>\u09e7\u09ec<\/strong> <\/strong>\u0993<\/strong> <\/strong>\u09e7\u09ed<\/strong> <\/strong>\u09a8\u0982<\/strong> <\/strong>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0<\/strong> <\/strong>\u0989\u09a4\u09cd\u09a4\u09b0<\/strong> <\/strong>\u09a6\u09be\u0993\u0983<\/strong><\/strong><\/p>\n\n\n\n

U={2,3,5,7}, A={2,5}, B={3,5,7}<\/p>\n\n\n\n

\u09e7\u09ec<\/strong>. Ac<\/sup> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {2,5}   \u0996) {3,5}   \u0997) {3,7}   \u0998) {2,7}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n

\u09e7\u09ed<\/strong>. A<\/strong>\u2229<\/strong>Bc<\/sup> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {2}   \u0996) {5}   \u0997) {2,5}   \u0998) {3,7}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n

\u09a8\u09bf\u099a\u09c7\u09b0<\/strong> <\/strong>\u09ad\u09c7\u09a8\u099a\u09bf\u09a4\u09cd\u09b0\u09c7\u09b0<\/strong> <\/strong>\u0986\u09b2\u09cb\u0995\u09c7<\/strong> <\/strong>\u09e7\u09ee<\/strong> <\/strong>\u09a5\u09c7\u0995\u09c7<\/strong> <\/strong>\u09e8\u09e7<\/strong> <\/strong>\u09a8\u0982<\/strong> <\/strong>\u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09c7\u09b0<\/strong> <\/strong>\u0989\u09a4\u09cd\u09a4\u09b0<\/strong> <\/strong>\u09a6\u09be\u0993\u0983<\/strong><\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u09e7\u09ee<\/strong>. <\/strong>\u09b8\u09be\u09b0\u09cd\u09ac\u09bf\u0995<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) A   \u0996) B   \u0997) A\u222aB   \u0998) U<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0998<\/p>\n\n\n\n

\u09e7\u09ef<\/strong>. <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> Bc<\/sup> <\/strong>\u09b8\u09c7\u099f<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {5,6,7,8}   \u0996) {2,3,5,6}   \u0997) {1,4,7,8}   \u0998) {3,6}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0997<\/p>\n\n\n\n

\u09e8\u09e6<\/strong>. <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> A<\/strong>\u2229<\/strong>B <\/strong>\u09b8\u09c7\u099f<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {2,3}   \u0996) {2,3,5,6} \u0997) {3,4,6,7}   \u0998) {2,3,4,5,6,7}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983 \u0995<\/p>\n\n\n\n

\u09e8\u09e7<\/strong>. <\/strong>\u0995\u09cb\u09a8\u099f\u09bf<\/strong> A<\/strong>\u222a<\/strong>B <\/strong>\u09b8\u09c7\u099f<\/strong>?<\/strong><\/p>\n\n\n\n

\u0995) {1,2,3,4,5,6}   \u0996) {5,6,7}   \u0997) {8} \u0998) {3}<\/p>\n\n\n\n

\u0989\u09a4\u09cd\u09a4\u09b0\u0983\u00a0\u0995<\/p>\n\n\n\n

\u09e8\u09e8<\/strong>. <\/strong>\u0995\u09cb\u09a8\u09cb<\/strong> <\/strong>\u099b\u09be\u09a4\u09cd\u09b0\u09be\u09ac\u09be\u09b8\u09c7\u09b0<\/strong> 65% <\/strong>\u099b\u09be\u09a4\u09cd\u09b0<\/strong> <\/strong>\u09ae\u09be\u099b<\/strong> <\/strong>\u09aa\u099b\u09a8\u09cd\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7<\/strong>, 55% <\/strong>\u099b\u09be\u09a4\u09cd\u09b0<\/strong> <\/strong>\u09ae\u09be\u0982\u09b8<\/strong> <\/strong>\u09aa\u099b\u09a8\u09cd\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> 40% <\/strong>\u099b\u09be\u09a4\u09cd\u09b0<\/strong> <\/strong>\u0989\u09ad\u09af\u09bc\u099f\u09bf<\/strong> <\/strong>\u09aa\u099b\u09a8\u09cd\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7\u0964<\/strong><\/strong><\/p>\n\n\n\n

(<\/strong>\u0995<\/strong>) <\/strong>\u09b8\u0982\u0995\u09cd\u09b7\u09bf\u09aa\u09cd\u09a4<\/strong> <\/strong>\u09ac\u09bf\u09ac\u09b0\u09a3\u09b8\u09b9<\/strong> <\/strong>\u0989\u09aa\u09b0\u09c7\u09b0<\/strong> <\/strong>\u09a4\u09a5\u09cd\u09af\u0997\u09c1\u09b2\u09cb<\/strong> <\/strong>\u09ad\u09c7\u09a8\u099a\u09bf\u09a4\u09cd\u09b0\u09c7<\/strong> <\/strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7=\u09ae\u09cb\u099f \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u09c7\u099f<\/p>\n\n\n\n

A=\u09ae\u09be\u099b \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u09c7\u099f<\/p>\n\n\n\n

B=\u09ae\u09be\u0982\u09b8 \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u09c7\u099f<\/p>\n\n\n\n

A\u2229B=\u09ae\u09be\u099b \u0993 \u09ae\u09be\u0982\u09b8 \u0989\u09ad\u09bf\u09af\u09bc\u099f\u09bf \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u09c7\u099f<\/a><\/p>\n\n\n\n

(<\/strong>\u0996<\/strong>) <\/strong>\u0989\u09ad\u09af\u09bc<\/strong> <\/strong>\u0996\u09be\u09a6\u09cd\u09af<\/strong> <\/strong>\u09aa\u099b\u09a8\u09cd\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7<\/strong> <\/strong>\u09a8\u09be<\/strong> <\/strong>\u09a4\u09be\u09a6\u09c7\u09b0<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09a7\u09b0\u09bf, \u09ae\u09cb\u099f \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be, U=100<\/p>\n\n\n\n

\u2234\u0989\u09ad\u09af\u09bc \u0996\u09be\u09a6\u09cd\u09af \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be, A\u2229B=40<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7,<\/p>\n\n\n\n

\u0989\u09ad\u09af\u09bc \u0996\u09be\u09a6\u09cd\u09af \u09aa\u099b\u09a8\u09cd\u09a6 \u0995\u09b0\u09c7 \u09a8\u09be \u098f\u09ae\u09a8 \u099b\u09be\u09a4\u09cd\u09b0\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09ac\u09c7 U-(A\u2229B)=100-40=60<\/p>\n\n\n\n

\u0985\u09b0\u09cd\u09a5\u09be\u09ce, 60% \u099b\u09be\u09a4\u09cd\u09b0 \u0989\u09ad\u09af\u09bc \u0996\u09be\u09a6\u09cd\u09af \u09aa\u099b\u09a8\u09cd\u09a6 \u0995\u09b0\u09c7 \u09a8\u09be\u0964<\/p>\n\n\n\n

(<\/strong>\u0997<\/strong>) <\/strong>\u09af\u09be\u09b0\u09be<\/strong> <\/strong>\u09b6\u09c1\u09a7\u09c1<\/strong> <\/strong>\u098f\u0995\u099f\u09bf<\/strong> <\/strong>\u0996\u09be\u09a6\u09cd\u09af<\/strong> <\/strong>\u09aa\u099b\u09a8\u09cd\u09a6<\/strong> <\/strong>\u0995\u09b0\u09c7<\/strong> <\/strong>\u09a4\u09be\u09a6\u09c7\u09b0<\/strong> <\/strong>\u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0<\/strong> <\/strong>\u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995<\/strong> <\/strong>\u09b8\u09c7\u099f\u09c7\u09b0<\/strong> <\/strong>\u099b\u09c7\u09a6<\/strong> <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u09ae\u09be\u099b \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=65%<\/p>\n\n\n\n

\u09ae\u09be\u0982\u09b8 \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=55%<\/p>\n\n\n\n

\u09ae\u09be\u099b \u0993 \u09ae\u09be\u0982\u09b8 \u0989\u09ad\u09af\u09bc \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=40%<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7,<\/p>\n\n\n\n

\u09b6\u09c1\u09a7\u09c1 \u09ae\u09be\u099b \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be =(65-40)%=25%<\/p>\n\n\n\n

\u098f\u09ac\u0982 \u09b6\u09c1\u09a7\u09c1 \u09ae\u09be\u0982\u09b8 \u09aa\u099b\u09a8\u09cd\u09a6\u0995\u09be\u09b0\u09c0 \u099b\u09be\u09a4\u09cd\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be=(55-40)%=15%<\/p>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7 25 \u098f\u09b0 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09c7\u09b0 \u09b8\u09c7\u099f P={1,5,25}<\/p>\n\n\n\n

\u098f\u09ac\u0982 15 \u098f\u09b0 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995\u09c7\u09b0 \u09b8\u09c7\u099f Q={1,3,5,15}<\/p>\n\n\n\n

\u2234 P\u2229Q={1,5,25}\u2229{1,3,5,15}={1,5}<\/p>\n\n\n\n

\u09e8\u09e9<\/strong>.<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

(<\/strong>\u0995<\/strong>) A <\/strong>\u09b8\u09c7\u099f\u099f\u09bf<\/strong> <\/strong>\u09b8\u09c7\u099f<\/strong> <\/strong>\u0997\u09a0\u09a8<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7<\/strong> <\/strong>\u09b2\u09bf\u0996\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/p>\n\n\n\n

\u099a\u09bf\u09a4\u09cd\u09b0\u09c7, A={3,4,5,6}<\/p>\n\n\n\n

\u09aa\u09cd\u09b0\u09a6\u09a4\u09cd\u09a4 \u09b8\u09c7\u099f\u09c7\u09b0 \u0989\u09aa\u09be\u09a6\u09be\u09a8\u09b8\u09ae\u09c2\u09b9 3,4,5,6<\/p>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7, \u0989\u09aa\u09be\u09a6\u09be\u09a8\u09cd\u09b8\u09ae\u09c2\u09b9 2 \u09a5\u09c7\u0995\u09c7 \u09ac\u09a1\u09bc \u098f\u09ac\u0982 7 \u09a5\u09c7\u0995\u09c7 \u099b\u09cb\u099f \u09b8\u0995\u09b2 \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be\u0964<\/p>\n\n\n\n

\u09a7\u09b0\u09bf \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u099a\u09b2\u0995 x<\/p>\n\n\n\n

\u2234 \u09a8\u09bf\u09b0\u09cd\u09a3\u09c7\u09af\u09bc \u09b8\u09c7\u099f {x:x \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u098f\u09ac\u0982 2<x<7}<\/p>\n\n\n\n

(<\/strong>\u0996<\/strong>) A, B <\/strong>\u0993<\/strong> C <\/strong>\u0995\u09c7<\/strong> <\/strong>\u09a4\u09be\u09b2\u09bf\u0995\u09be<\/strong> <\/strong>\u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7<\/strong> <\/strong>\u09aa\u09cd\u09b0\u0995\u09be\u09b6<\/strong> <\/strong>\u0995\u09b0\u09cb<\/strong> <\/strong>\u098f\u09ac\u0982<\/strong> A<\/strong>\u2229<\/strong>C <\/strong>\u0993<\/strong> A<\/strong>\u222a<\/strong>B <\/strong>\u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc<\/strong> <\/strong>\u0995\u09b0\u0964<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u099a\u09bf\u09a4\u09cd\u09b0 \u09b9\u09a4\u09c7, A, B \u0993 C \u0995\u09c7 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u09c7 \u09aa\u09be\u0987,<\/p>\n\n\n\n

A={3,4,5,6}<\/p>\n\n\n\n

B={4,5,8,9}<\/p>\n\n\n\n

C={5,6,7,8}<\/p>\n\n\n\n

\u2234 A\u2229C={3,4,5,6}\u2229{5,6,7,8}={5,6}<\/p>\n\n\n\n

\u098f\u09ac\u0982 A\u222aB={3,4,5,6}\u222a{4,5,8,9}={3,4,5,6,8,9}<\/p>\n\n\n\n

(<\/strong>\u0997<\/strong>) <\/strong>\u09aa\u09cd\u09b0\u09ae\u09be\u09a3<\/strong> <\/strong>\u0995\u09b0<\/strong> <\/strong>\u09af\u09c7<\/strong>, (A<\/strong>\u222a<\/strong>B)<\/strong>\u2019<\/strong>=A<\/strong>\u2019<\/strong>\u2229<\/strong>B<\/strong>\u2019<\/strong><\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/strong><\/p>\n\n\n\n

\u099a\u09bf\u09a4\u09cd\u09b0\u09c7,<\/p>\n\n\n\n

U={3,4,5,6,7,8,9,10}<\/p>\n\n\n\n

A={3,4,5,6}<\/p>\n\n\n\n

B={4,5,8,9}<\/p>\n\n\n\n

C={5,6,7,8}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u222aB={3,4,5,6}\u222a{4,5,8,9}={3,4,5,6,8,9}<\/p>\n\n\n\n

\u2234(A\u222aB)\u2019=U-(A\u222aB)={3,4,5,6,7,8,9,10}-{3,4,5,6,8,9}={7,10}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

A\u2019=U-A={3,4,5,6,7,8,9,10}-{3,4,5,6}={7,8,9,10}<\/p>\n\n\n\n

B\u2019=U-B={3,4,5,6,7,8,9,10}-{4,5,8,9}={3,6,7,10}<\/p>\n\n\n\n

\u2234 A\u2019\u2229B\u2019={7,8,9,10}\u2229{3,6,7,10}={7,10}<\/p>\n\n\n\n

\u0985\u09a4\u098f\u09ac,<\/p>\n\n\n\n

\u2234 (A\u222aB)\u2019=A\u2019\u2229B\u2019 [\u09aa\u09cd\u09b0\u09ae\u09be\u09a3\u09bf\u09a4]<\/p>\n\n\n\n

\u09e8\u09ea. \u09b8\u09be\u09b0\u09cd\u09ac\u09bf\u0995 \u09b8\u09c7\u099f U={1,2,3,4,5,6,7} \u098f\u09b0 \u09a4\u09bf\u09a8\u099f\u09bf \u0989\u09aa\u09b8\u09c7\u099f<\/strong><\/p>\n\n\n\n

A={x<\/strong>\u2208N:x<7 <\/strong>\u098f\u09ac\u0982 <\/strong>x <\/strong>\u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong>}<\/strong><\/p>\n\n\n\n

B=<\/strong>{x<\/strong>\u2208N:x<7 <\/strong>\u098f\u09ac\u0982 <\/strong>x <\/strong>\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong>}<\/strong><\/p>\n\n\n\n

C=<\/strong>{x<\/strong>\u2208N:x<\/strong>\u2264<\/strong>3 \u098f\u09ac\u0982<\/strong> x <\/strong>\u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be<\/strong>}<\/strong><\/p>\n\n\n\n

(\u0995) A \u0993 B \u09b8\u09c7\u099f\u0995\u09c7 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

A={x\u2208N:x<7 \u098f\u09ac\u0982 x \u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be}<\/p>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7,<\/p>\n\n\n\n

U={1,2,3,4,5,6,7}<\/p>\n\n\n\n

7 \u09a5\u09c7\u0995\u09c7 \u099b\u09cb\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be 1,2,3,4,5,6 \u09af\u09be\u09b0 \u09ae\u09a7\u09cd\u09af \u09ac\u09bf\u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09b2\u09cb\u0983 1,3,5<\/p>\n\n\n\n

\u2234 A={1,3,5}<\/p>\n\n\n\n

\u0986\u09ac\u09be\u09b0,<\/p>\n\n\n\n

7 \u09a5\u09c7\u0995\u09c7 \u099b\u09cb\u099f \u09b8\u0982\u0996\u09cd\u09af\u09be 1,2,3,4,5,6 \u09af\u09be\u09b0 \u09ae\u09a7\u09cd\u09af \u099c\u09cb\u09a1\u09bc \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09b2\u09cb\u0983 2,4,6<\/p>\n\n\n\n

\u2234 B={2,4,6}<\/p>\n\n\n\n

\u0985\u09b0\u09cd\u09a5\u09be\u09ce, A \u0993 B \u09b8\u09c7\u099f\u0995\u09c7 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u09c7 \u09aa\u09be\u0987,<\/p>\n\n\n\n

A={1,3,5} \u098f\u09ac\u0982 B={2,4,6}<\/p>\n\n\n\n

(\u0996) (A<\/strong>\u222a<\/strong>B)<\/strong> \u2229<\/strong> (A<\/strong>\u222a<\/strong>C) \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u0995 \u09b9\u09a4\u09c7 \u09aa\u09be\u0987,<\/p>\n\n\n\n

A={1,3,5} \u098f\u09ac\u0982 B={2,4,6}<\/p>\n\n\n\n

\u098f\u0996\u09a8, U={1,2,3,4,5,6,7} \u09af\u09c7\u0996\u09be\u09a8\u09c7 3 \u098f\u09b0 \u09b8\u09ae\u09be\u09a8 \u0993 \u099b\u09cb\u099f \u09ae\u09cc\u09b2\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09b9\u09b2\u09cb\u0983 1,2,3<\/p>\n\n\n\n

\u2234 C={1,2,3}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

A\u222aB={1,3,5}\u222a{2,4,6}={1,2,3,4,5,6}<\/p>\n\n\n\n

A\u222aC={1,3,5}\u222a{1,2,3}={1,2,3,5}<\/p>\n\n\n\n

\u2234 (A\u222aB)\u2229(A\u222aC={1,2,3,4,5,6}\u2229{1,2,3,5}={4,6}<\/p>\n\n\n\n

(\u0997) (B<\/strong>\u222a<\/strong>C)\u2019 \u098f\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u09b2\u09bf\u0996\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u098f\u0996\u09be\u09a8\u09c7,<\/p>\n\n\n\n

U={1,2,3,4,5,6,7}<\/p>\n\n\n\n

B={2,4,6}<\/p>\n\n\n\n

C={1,2,3}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

B\u222aC={2,4,6}\u222a{1,2,3}={1,2,3,4,6}<\/p>\n\n\n\n

\u2234 (B\u222aC)\u2019=U-(B\u222aC)={1,2,3,4,5,6,7}-{1,2,3,4,6}={5,7}<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7, (B\u222aC)\u2019 \u098f\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u2205, {5}, {7}, {5,7}<\/p>\n\n\n\n

\u09e8\u09eb. \u09af\u09c7 \u09b8\u0995\u09b2 \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09a6\u09cd\u09ac\u09be\u09b0\u09be 346 \u0993 556 \u0995\u09c7 \u09ad\u09be\u0997 \u0995\u09b0\u09b2\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 31 \u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u09a5\u09be\u0995\u09c7 \u09a4\u09be\u09a6\u09c7\u09b0 \u09b8\u09c7\u099f \u09af\u09a5\u09be\u0995\u09cd\u09b0\u09ae\u09c7 A \u0993 B<\/strong><\/p>\n\n\n\n

(\u0995) A \u09b8\u09c7\u099f\u0995\u09c7 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u09af\u09c7 \u09b8\u0995\u09b2 \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09a6\u09cd\u09ac\u09be\u09b0\u09be 346 \u0995\u09c7 \u09ad\u09be\u0997 \u0995\u09b0\u09b2\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 31 \u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u09a5\u09be\u0995\u09c7 \u09b8\u09c7 \u09b8\u0995\u09b2 \u09b8\u0982\u0996\u09cd\u09af\u09be 31 \u0985\u09aa\u09c7\u0995\u09cd\u09b7\u09be \u09ac\u09a1\u09bc \u098f\u09ac\u0982 (346-31)=315 \u098f\u09b0 \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995 \u09af\u09be\u09b0 \u09b8\u09c7\u099f A.<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

315<\/p>\n\n\n\n

=1\u2715315<\/p>\n\n\n\n

=3\u2715105<\/p>\n\n\n\n

=5\u271563<\/p>\n\n\n\n

=7\u271545<\/p>\n\n\n\n

=9\u271535<\/p>\n\n\n\n

=15\u271521<\/p>\n\n\n\n

\u2234 A={35,45,63,105,315}<\/p>\n\n\n\n

(\u0996) A<\/strong>\u2229<\/strong>B \u09a8\u09bf\u09b0\u09cd\u09a3\u09af\u09bc \u0995\u09b0\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u0995 \u09b9\u09a4\u09c7 \u09aa\u09be\u0987, A={35,45,63,105,315}<\/p>\n\n\n\n

\u098f\u0996\u09a8,<\/p>\n\n\n\n

\u09af\u09c7 \u09b8\u0995\u09b2 \u09b8\u09cd\u09ac\u09be\u09ad\u09be\u09ac\u09bf\u0995 \u09b8\u0982\u0996\u09cd\u09af\u09be \u09a6\u09cd\u09ac\u09be\u09b0\u09be 556 \u0995\u09c7 \u09ad\u09be\u0997 \u0995\u09b0\u09b2\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 31 \u0985\u09ac\u09b6\u09bf\u09b7\u09cd\u099f \u09a5\u09be\u0995\u09c7 \u09b8\u09c7 \u09b8\u0995\u09b2 \u09b8\u0982\u0996\u09cd\u09af\u09be 31 \u0985\u09aa\u09c7\u0995\u09cd\u09b7\u09be \u09ac\u09a1\u09bc \u098f\u09ac\u0982 (556-31)=525 \u098f\u09b0 \u09b8\u09be\u09a7\u09be\u09b0\u09a3 \u0997\u09c1\u09a3\u09a8\u09c0\u09af\u09bc\u0995 \u09af\u09be\u09b0 \u09b8\u09c7\u099f B.<\/p>\n\n\n\n

525<\/p>\n\n\n\n

=1\u2715525<\/p>\n\n\n\n

=3\u2715175<\/p>\n\n\n\n

=5\u2715105<\/p>\n\n\n\n

=7\u271575<\/p>\n\n\n\n

=15\u271535<\/p>\n\n\n\n

=21\u271525<\/p>\n\n\n\n

\u2234 B={35,75,105,175,525}<\/p>\n\n\n\n

\u09a4\u09be\u09b9\u09b2\u09c7,<\/p>\n\n\n\n

A\u2229B={35,45,63,105,315}\u2229{35,75,105,175,525}={35,105}<\/p>\n\n\n\n

(\u0997) A<\/strong>\u2229<\/strong>B \u09ad\u09c7\u09a8\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 \u09a6\u09c7\u0996\u09be\u0993 \u098f\u09ac\u0982 A<\/strong>\u2229<\/strong>B \u098f\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u09b2\u09bf\u0996\u0964<\/strong><\/p>\n\n\n\n

\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/p>\n\n\n\n

\u09a8\u09bf\u099a\u09c7 \u09ad\u09c7\u09a8\u099a\u09bf\u09a4\u09cd\u09b0\u09c7 A\u2229B \u09a6\u09c7\u0996\u09be\u09a8\u09cb \u09b9\u09b2\u09cb\u0983<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u0995 \u09b9\u09a4\u09c7 \u09aa\u09be\u0987, A\u2229B={35,105}<\/p>\n\n\n\n

\u2234 A\u2229B \u098f\u09b0 \u0989\u09aa\u09b8\u09c7\u099f\u0997\u09c1\u09b2\u09cb \u09b9\u09b2\u09cb\u0983 \u2205, {35}, {105}, {35,105}<\/p>\n\n\n\n

\n\n\n\n
Class 8 math book all chapter solution Bangla version pdf | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 PDF<\/td><\/tr>
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tags: <\/em>Bangladesh, Bangla, Bengali, Class 8\/jsc math solution 2021 pdf, 8th class maths guide pdf free download, math book solution BD, class 8 srijonshil math, Chapter 6.2 \u09b8\u09ae\u09b8\u09cd\u09af\u09be\u09b0 \u09b8\u09b9\u09b8\u09ae\u09c0\u0995\u09b0\u09a3 \u0997\u09a0\u09a8<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Eight (08) Math Book Solution | Chapter 07 :Set | Class 8 math book Online Solution in Bangla (BD) \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed – PDF \u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed \u098f\u09b0 \u09b8\u0995\u09b2 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u0993 \u0989\u09a4\u09cd\u09a4\u09b0 \u098f\u0996\u09be\u09a8\u09c7 \u09b0\u09df\u09c7\u099b\u09c7\u0964 \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 […]<\/p>\n","protected":false},"author":1,"featured_media":4919,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[36],"tags":[37,38],"class_list":["post-5151","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-eight-8","tag-class-8","tag-class-eight"],"yoast_head":"\n\u09ed\u09ae \u0985\u09a7\u09cd\u09af\u09be\u09df\u0983 \u09b8\u09c7\u099f | \u0985\u09a8\u09c1\u09b6\u09c0\u09b2\u09a8\u09c0 \u09ed | \u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf - Study Zone BD<\/title>\n<meta name=\"description\" content=\"\u09ee\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4 \u09ac\u0987 \u09b8\u09ae\u09cd\u09aa\u09c2\u09b0\u09cd\u09a3 \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Class Eight (08) Math Book Solution. 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