{"id":5909,"date":"2026-02-28T14:07:27","date_gmt":"2026-02-28T14:07:27","guid":{"rendered":"https:\/\/hazarnotes.com\/?p=5909"},"modified":"2026-08-19T01:26:26","modified_gmt":"2026-08-19T01:26:26","slug":"kose-dekhi-2-1-class-7-math-solution-wbbse","status":"publish","type":"post","link":"https:\/\/hazarnotes.com\/mystaging01\/kose-dekhi-2-1-class-7-math-solution-wbbse\/","title":{"rendered":"\u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf 2.1 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4\u09aa\u09cd\u09b0\u09ad\u09be \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Kose Dekhi 2.1 Class 7 Math Solution wbbse"},"content":{"rendered":"<p><strong>\u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf 2.1 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4\u09aa\u09cd\u09b0\u09ad\u09be \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Kose Dekhi 2.1 Class 7 Math Solution wbbse<\/strong><\/p>\n<h3 style=\"text-align: center;\"><span style=\"color: #ff0000;\">\u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf\u2014 2.1<\/span>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u09aa\u09c3\u09b7\u09cd\u09a0\u09be \u09b8\u0982\u0996\u09cd\u09af\u09be &#8211; 30<\/h3>\n<p><strong>1. 1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u099a\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 40 \u099f\u09be\u0995\u09be \u0993 1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 100 \u099f\u09be\u0995\u09be\u0964 \u099a\u09be\u09b2 \u0993 \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09a4 \u09b9\u09bf\u09b8\u09be\u09ac \u0995\u09b0\u09bf\u0964<\/strong><\/p>\n<p><span style=\"color: #800080;\"><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/span><\/p>\n<p>1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u099a\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 40 \u099f\u09be\u0995\u09be<br \/>\n1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 100 \u099f\u09be\u0995\u09be\u0964<\/p>\n<p>\u099a\u09be\u09b2 \u0993 \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 = 40 : 100 = 2 : 5<\/p>\n<p><strong>2. `angleBAC` : `angleABC` : `angleACB` = \u0995\u09a4 ?<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5916 size-large\" src=\"http:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2-1024x327.jpg\" alt=\"\" width=\"1024\" height=\"327\" srcset=\"https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2-1024x327.jpg 1024w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2-300x96.jpg 300w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2-768x245.jpg 768w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2-1536x490.jpg 1536w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Koshe-Dekhi-2.1-2.jpg 2011w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> `angleBAC` : `angleABC` : `angleACB` = 60 : 50 : 70 = 6 : 5 : 7<\/p>\n<p><strong>3. 1\u099f\u09bf \u09aa\u09c7\u09a8\u09cd\u09b8\u09bf\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae \u0993\u099f\u09be\u0995\u09be \u0993 1\u099f\u09bf \u09b2\u099c\u09c7\u09a8\u09cd\u09b8\u09c7\u09b0 \u09a6\u09be\u09ae 50 \u09aa\u09df\u09b8\u09be\u0964 1\u099f\u09bf \u09aa\u09c7\u09a8\u09b8\u09bf\u09b2 \u0993 1\u099f\u09bf \u09b2\u099c\u09c7\u09a8\u09cd\u09b8\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09b0\u09c7 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong><\/p>\n<p>1\u099f\u09bf \u09aa\u09c7\u09a8\u09cd\u09b8\u09bf\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae = 3 \u099f\u09be\u0995\u09be = 3\u00d7100 \u09aa\u09df\u09b8\u09be = 300 \u09aa\u09df\u09b8\u09be<br \/>\n1\u099f\u09bf \u09b2\u099c\u09c7\u09a8\u09cd\u09b8\u09c7\u09b0 \u09a6\u09be\u09ae = 50 \u09aa\u09df\u09b8\u09be<\/p>\n<p>\u2234 1\u099f\u09bf \u09aa\u09c7\u09a8\u09b8\u09bf\u09b2 \u0993 1\u099f\u09bf \u09b2\u099c\u09c7\u09a8\u09cd\u09b8\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4\u2014<br \/>\n= 300 : 50 = 30 : 5 = 6 : 1 (\u0989\u09a4\u09cd\u09a4\u09b0)<\/p>\n<p><strong>4. \u098f\u0995\u099f\u09bf \u0986\u09a7\u09c1\u09b2\u09bf, \u098f\u0995\u099f\u09bf \u098f\u0995 \u099f\u09be\u0995\u09be \u0993 \u098f\u0995\u099f\u09bf \u09a6\u09c1- \u099f\u09be\u0995\u09be\u09b0 \u09ae\u09c1\u09a6\u09cd\u09b0\u09be\u09b0 \u09ae\u09c2\u09b2\u09cd\u09af\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong><\/p>\n<p>1 \u099f\u09bf \u0986\u09a7\u09c1\u09b2\u09bf = 50 \u09aa\u09df\u09b8\u09be,<br \/>\n1 \u099f\u09be\u0995\u09be = 1 \u00d7 100 = 100 \u09aa\u09df\u09b8\u09be,<br \/>\n2 \u099f\u09be\u0995\u09be = 2 \u00d7 100 \u09aa\u09df\u09b8\u09be = 200 \u09aa\u09df\u09b8\u09be<\/p>\n<p>\u2234 \u098f\u0995\u099f\u09bf \u0986\u09a7\u09c1\u09b2\u09bf, \u098f\u0995\u099f\u09bf \u098f\u0995 \u099f\u09be\u0995\u09be \u0993 \u098f\u0995\u099f\u09bf \u09a6\u09c1-\u099f\u09be\u0995\u09be\u09b0 \u09ae\u09c1\u09a6\u09cd\u09b0\u09be\u09b0 \u09ae\u09c1\u09b2\u09cd\u09af\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4\u2014<\/p>\n<p>= 50 : 100 : 200<\/p>\n<p>= 5 : 10 : 20<\/p>\n<p>= 1 : 2 : 4 (\u0989\u09a4\u09cd\u09a4\u09b0)<\/p>\n<p><strong>5. \u0989\u09ae\u09be\u09b0 \u09ac\u09df\u09b8 12 \u09ac\u099b\u09b0 6 \u09ae\u09be\u09b8, \u09b0\u09be\u09a4\u09c1\u09b2\u09c7\u09b0 \u09ac\u09df\u09b8 12 \u09ac\u099b\u09b0 4 \u09ae\u09be\u09b8 \u0993 \u09a8\u09c1\u09b0\u099c\u09be\u09b9\u09be\u09a8\u09c7\u09b0 \u09ac\u09df\u09b8 12 \u09ac\u099b\u09b0 \u09b9\u09b2\u09c7, \u0993\u09a6\u09c7\u09b0 \u09a4\u09bf\u09a8\u099c\u09a8\u09c7\u09b0 \u09ac\u09df\u09c7\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09a4 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u0989\u09ae\u09be\u09b0 \u09ac\u09df\u09b8 = 12 \u09ac\u099b\u09b0 6 \u09ae\u09be\u09b8= (12\u00d712+6) \u09ae\u09be\u09b8 = (144+6) \u09ae\u09be\u09b8 = 150 \u09ae\u09be\u09b8<\/p>\n<p>\u09b0\u09be\u09a4\u09c1\u09b2\u09c7\u09b0 \u09ac\u09df\u09b8 = 12 \u09ac\u099b\u09b0 4 \u09ae\u09be\u09b8 = (12\u00d712+4) \u09ae\u09be\u09b8 = (144+4) \u09ae\u09be\u09b8 = 148 \u09ae\u09be\u09b8<\/p>\n<p>\u09a8\u09c1\u09b0\u099c\u09be\u09b9\u09be\u09a8\u09c7\u09b0 \u09ac\u09df\u09b8 = 12 \u09ac\u099b\u09b0= 12\u00d712 \u09ae\u09be\u09b8 = 144 \u09ae\u09be\u09b8<\/p>\n<p>\u2234 \u0993\u09a6\u09c7\u09b0 \u09a4\u09bf\u09a8\u099c\u09a8\u09c7\u09b0 \u09ac\u09df\u09c7\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 = 150 : 148 : 144 = 75 : 74 : 72<\/p>\n<p><strong>6. \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09bf\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09a4 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><span style=\"color: #800080;\"><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/span> \u09a7\u09b0\u09bf, ABC \u098f\u0995\u099f\u09bf \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5917 size-full\" src=\"http:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-6.jpg\" alt=\"\" width=\"1025\" height=\"448\" srcset=\"https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-6.jpg 1025w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-6-300x131.jpg 300w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-6-768x336.jpg 768w\" sizes=\"auto, (max-width: 1025px) 100vw, 1025px\" \/><\/p>\n<p>\u09af\u09be\u09b0 `angleBAC` = 90\u00b0, AB = AC<\/p>\n<p>\u098f\u09ac\u0982 `angleABC` = `angleACB` = 45\u00b0<\/p>\n<p>\u2234 \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09bf\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4<\/p>\n<p>= `angleABC` : `angleBAC` : `angleACB`<\/p>\n<p>= 90 : 45 : 45<\/p>\n<p>= 2 : 1 : 1<\/p>\n<p><strong>\u0985\u09a5\u09ac\u09be,<\/strong> \u09b8\u09ae\u0995\u09cb\u09a3\u09c0 \u09b8\u09ae\u09a6\u09cd\u09ac\u09bf\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09bf\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4<\/p>\n<p>= `angleACB` : `angleBAC` : `angleABC`<\/p>\n<p>= 45 : 45 : 90<\/p>\n<p>= 1 : 1 : 2<\/p>\n<p><strong>7. \u09b8\u09ae\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u0995\u09cb\u09a3\u0997\u09c1\u09b2\u09bf\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09a4 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u09a7\u09b0\u09bf, ABC \u098f\u0995\u099f\u09bf \u09b8\u09ae\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5923 size-full\" src=\"http:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-7-1.jpg\" alt=\"\" width=\"1023\" height=\"531\" srcset=\"https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-7-1.jpg 1023w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-7-1-300x156.jpg 300w, https:\/\/hazarnotes.com\/mystaging01\/wp-content\/uploads\/2026\/02\/7-Kose-Dekhi-2.1-7-1-768x399.jpg 768w\" sizes=\"auto, (max-width: 1023px) 100vw, 1023px\" \/><\/p>\n<p>\u2234 AB = BC = CA<\/p>\n<p>\u2234 \u09b8\u09ae\u09ac\u09be\u09b9\u09c1 \u09a4\u09cd\u09b0\u09bf\u09ad\u09c1\u099c\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09bf\u099f\u09bf \u09ac\u09be\u09b9\u09c1\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 = AB : BC : CA = AB : AB : AB = 1:1:1<\/p>\n<p><strong>8. \u09aa\u09c1\u09b2\u0995\u09ac\u09be\u09ac\u09c1 \u0993 \u09ae\u09be\u09a8\u09bf\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 7 : 9; \u09ae\u09be\u09a8\u09bf\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8 72 \u09ac\u099b\u09b0 \u09b9\u09b2\u09c7, \u09aa\u09c1\u09b2\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8 \u09b9\u09bf\u09b8\u09be\u09ac \u0995\u09b0\u09c7 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u09aa\u09c1\u09b2\u0995\u09ac\u09be\u09ac\u09c1 \u0993 \u09ae\u09be\u09a8\u09bf\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 7 : 9<\/p>\n<p>\u2234 \u09aa\u09c1\u09b2\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09af\u09bc\u09b8 \u00f7 \u09ae\u09be\u09a8\u09bf\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8 = 7 \u00f7 9<\/p>\n<p>\u2234 \u09ae\u09be\u09a8\u09bf\u0995\u09ac\u09be\u09ac\u09c1\u09b0 \u09ac\u09df\u09b8 = `frac7{9}` \u00d7 72 \u09ac\u099b\u09b0 = 56 \u09ac\u099b\u09b0\u0964<\/p>\n<p><strong>9. \u09a6\u09c1\u099f\u09bf \u09ac\u0987\u09df\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 2:5; \u09aa\u09cd\u09b0\u09a5\u09ae \u09ac\u0987\u099f\u09bf\u09b0 \u09a6\u09be\u09ae 32.20 \u099f\u09be\u0995\u09be \u09b9\u09b2\u09c7, \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09ac\u0987\u099f\u09bf\u09b0 \u09a6\u09be\u09ae \u09b9\u09bf\u09b8\u09be\u09ac \u0995\u09b0\u09c7 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u09a6\u09c1\u099f\u09bf \u09ac\u0987\u09df\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 2:5<\/p>\n<p>\u2234 \u09aa\u09cd\u09b0\u09a5\u09ae \u09ac\u0987\u099f\u09bf\u09b0 \u09a6\u09be\u09ae: \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09ac\u0987\u099f\u09bf\u09b0 \u09a6\u09be\u09ae = 2:5<\/p>\n<p>\u09ac\u09be, \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09ac\u0987\u099f\u09bf\u09b0 \u09a6\u09be\u09ae = 32.20 \u00d7 `frac5{2}` \u099f\u09be\u0995\u09be = 80.50 \u099f\u09be\u0995\u09be\u0964<\/p>\n<p><strong>10. \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u0993 \u09ac\u09cd\u09af\u09be\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 22 : 7; \u09af\u09c7 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09c7\u09b0 \u09a6\u09c8\u09b0\u09cd\u0998\u09cd\u09af 2 \u09ae\u09bf\u099f\u09be\u09b0 1 \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0, \u09b8\u09c7\u0987 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u09b9\u09bf\u09b8\u09be\u09ac \u0995\u09b0\u09c7 \u09b2\u09bf\u0996\u09bf\u0964<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8 = 2 \u09ae\u09bf\u099f\u09be\u09b0 1 \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0 = (2\u00d710+1) \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0 = (20+1) \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0 = 21 \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0\u0964<\/p>\n<p>\u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u0993 \u09ac\u09cd\u09af\u09be\u09b8\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 22 : 7<\/p>\n<p>\u2234 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf \u00f7 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09ac\u09cd\u09af\u09be\u09b8\u09c7\u09b0 = 22 \u00f7 7<\/p>\n<p>\u2234 \u09ac\u09c3\u09a4\u09cd\u09a4\u09c7\u09b0 \u09aa\u09b0\u09bf\u09a7\u09bf = `frac(22){7}` \u00d7 21 = \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0 = 66 \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0 = `frac(66){10}` \u09ae\u09bf\u099f\u09be\u09b0 = 6.6 \u09ae\u09bf\u099f\u09be\u09b0 = 6 \u09ae\u09bf\u099f\u09be\u09b0 6 \u09a1\u09c7\u09b8\u09bf\u09ae\u09bf\u099f\u09be\u09b0\u0964<\/p>\n<p><strong>11. \u0986\u09ae\u09be\u09a6\u09c7\u09b0 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 150 \u099c\u09a8\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 90 \u099c\u09a8 \u0993 \u09b7\u09b7\u09cd\u09a0 \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 140 \u099c\u09a8\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 \u09ea\u09e6 \u099c\u09a8 \u0985\u0999\u09cd\u0995\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09bf\u09a4\u09be\u09df \u09a8\u09be\u09ae \u09a6\u09bf\u09df\u09c7\u099b\u09c7\u0964 \u0985\u09a8\u09c1\u09aa\u09be\u09a4\u09c7 \u09aa\u09cd\u09b0\u0995\u09be\u09b6 \u0995\u09b0\u09c7 \u09a6\u09c7\u0996\u09bf \u0995\u09cb\u09a8 \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09c0 \u09ac\u09c7\u09b6\u09bf ?<\/strong><\/p>\n<p><strong><span style=\"color: #800080;\">\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/span><\/strong> \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 \u09ae\u09cb\u099f \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0 \u0993 \u0985\u0999\u09cd\u0995\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09bf\u09a4\u09be\u09df \u09a8\u09be\u09ae \u09a6\u09c7\u0993\u09df\u09be \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 = 150 : 90 = 5 : 3<\/p>\n<p>\u2234 \u0985\u0999\u09cd\u0995\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09bf\u09a4\u09be\u09df \u09a8\u09be\u09ae \u09a6\u09c7\u0993\u09df\u09be \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0\u09b0 \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u09ad\u09be\u0997\u09b9\u09be\u09b0 = `frac(5){5 + 3}` = `frac(5){8}`<\/p>\n<p>\u09b7\u09b7\u09cd\u09a0 \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 \u09ae\u09cb\u099f \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0 \u0993 \u0985\u0999\u09cd\u0995\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09bf\u09a4\u09be\u09df \u09a8\u09be\u09ae \u09a6\u09c7\u0993\u09df\u09be \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4= 140 : 80 = 7 : 4<\/p>\n<p>\u2234 \u0985\u0999\u09cd\u0995\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09bf\u09a4\u09be\u09df \u09a8\u09be\u09ae \u09a6\u09c7\u0993\u09df\u09be \u099b\u09be\u09a4\u09cd\u09b0\u099b\u09be\u09a4\u09cd\u09b0\u09c0\u09b0 \u0986\u09a8\u09c1\u09aa\u09be\u09a4\u09bf\u0995 \u09ad\u09be\u0997\u09b9\u09be\u09b0 = `frac(4){7 + 4}` = `frac(4){12}`<\/p>\n<p>\u098f\u0996\u09a8, `frac(5){8}` = `frac(5 \u00d7 11){8 + 11}` = `frac(55){88}` \u098f\u09ac\u0982 `frac(4){11}` = `frac(4 \u00d7 8){11 + 8}` = `frac(32){88}`<\/p>\n<p>\u2234 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf\u09a4\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf\u09af\u09cb\u0997\u09c0 \u09ac\u09c7\u09b6\u09bf\u0964<\/p>\n<p><strong>12. \u09a6\u09c1\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 5 : 7 \u098f\u09ac\u0982 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09a6\u09c1\u099f\u09bf\u09b0 \u0997. \u09b8\u09be. \u0997\u09c1. 13 \u09b9\u09b2\u09c7 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09a6\u09c1\u099f\u09bf \u0995\u09c0 \u0995\u09c0 ?<\/strong><\/p>\n<p><span style=\"color: #800080;\"><strong>\u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983<\/strong><\/span> \u09a6\u09c1\u099f\u09bf \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 5 : 7 \u098f\u09ac\u0982 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09a6\u09c1\u099f\u09bf\u09b0 \u0997. \u09b8\u09be. \u0997\u09c1. 13<\/p>\n<p>\u2234 \u09aa\u09cd\u09b0\u09a5\u09ae \u09b8\u0982\u0996\u09cd\u09af\u09be\u099f\u09bf \u09b9\u09b2 5\u00d713 = 65 \u098f\u09ac\u0982 \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09b8\u0982\u0996\u09cd\u09af\u09be\u099f\u09bf \u09b9\u09b2 7\u00d713 = 91<\/p>\n<p><span style=\"color: #800080;\"><strong>\ud83d\udccc\u0986\u09b0\u0993 \u09a6\u09c7\u0996\u09cb\u0983<\/strong><\/span><\/p>\n<p><strong>\ud83d\udccc\u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u0987\u0989\u09a8\u09bf\u099f \u099f\u09c7\u09b8\u09cd\u099f<\/span> \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09aa\u09a4\u09cd\u09b0 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-question-papers-all-subject-wbbse\/\">Click Here<\/a><\/strong><\/p>\n<p><strong>\ud83d\udccc \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u0997\u09a3\u09bf\u09a4<\/span> \u09b8\u09ae\u09be\u09a7\u09be\u09a8 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-math-solution-ganit-prabha-wbbse\/\">Click Here<\/a><\/strong><\/p>\n<p><span style=\"color: #800080;\"><strong>\ud83d\udccc \u0985\u09a8\u09cd\u09af\u09be\u09a8\u09cd\u09af \u09ac\u09bf\u09b7\u09af\u09bc\u09c7\u09b0 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09cb\u09a4\u09cd\u09a4\u09b0\u0983<\/strong><\/span><\/p>\n<p><strong>\ud83d\udccc \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u09ac\u09be\u0982\u09b2\u09be<\/span> \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09cb\u09a4\u09cd\u09a4\u09b0 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-bengali-textbook-solution-wbbse\/\">Click Here<\/a><\/strong><\/p>\n<p><strong>\ud83d\udccc \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u0987\u0982\u09b0\u09c7\u099c\u09bf<\/span> \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09cb\u09a4\u09cd\u09a4\u09b0 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-english-textbook-solution-wbbse\/\">Click Here<\/a><\/strong><\/p>\n<p><strong>\ud83d\udccc \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u0987\u09a4\u09bf\u09b9\u09be\u09b8<\/span> \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09cb\u09a4\u09cd\u09a4\u09b0 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-history-text-book-solution-wbbse\/\">Click Here<\/a><\/strong><\/p>\n<p><strong>\ud83d\udccc \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf <span style=\"color: #ff0000;\">\u09ad\u09c2\u0997\u09cb\u09b2<\/span> \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09cb\u09a4\u09cd\u09a4\u09b0 <a href=\"http:\/\/hazarnotes.com\/mystaging01\/class-7-geography-question-answer-wbbse\/\">Click Here<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf 2.1 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4\u09aa\u09cd\u09b0\u09ad\u09be \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Kose Dekhi 2.1 Class 7 Math Solution wbbse \u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf\u2014 2.1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u09aa\u09c3\u09b7\u09cd\u09a0\u09be \u09b8\u0982\u0996\u09cd\u09af\u09be &#8211; 30 1. 1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u099a\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 40 \u099f\u09be\u0995\u09be \u0993 1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae 100 \u099f\u09be\u0995\u09be\u0964 \u099a\u09be\u09b2 \u0993 \u09a1\u09be\u09b2\u09c7\u09b0 \u09a6\u09be\u09ae\u09c7\u09b0 \u0985\u09a8\u09c1\u09aa\u09be\u09a4 \u0995\u09a4 \u09b9\u09bf\u09b8\u09be\u09ac \u0995\u09b0\u09bf\u0964 \u09b8\u09ae\u09be\u09a7\u09be\u09a8\u0983 1 \u0995\u09bf\u0997\u09cd\u09b0\u09be. \u099a\u09be\u09b2\u09c7\u09b0 &#8230; <a title=\"\u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf 2.1 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4\u09aa\u09cd\u09b0\u09ad\u09be \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Kose Dekhi 2.1 Class 7 Math Solution wbbse\" class=\"read-more\" href=\"https:\/\/hazarnotes.com\/mystaging01\/kose-dekhi-2-1-class-7-math-solution-wbbse\/\" aria-label=\"Read more about \u0995\u09b7\u09c7 \u09a6\u09c7\u0996\u09bf 2.1 \u09b8\u09aa\u09cd\u09a4\u09ae \u09b6\u09cd\u09b0\u09c7\u09a3\u09bf \u0997\u09a3\u09bf\u09a4\u09aa\u09cd\u09b0\u09ad\u09be \u09b8\u09ae\u09be\u09a7\u09be\u09a8 | Kose Dekhi 2.1 Class 7 Math Solution wbbse\">Read 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