{"common":{"save":0,"post_id":"8203","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9220","post_id":"8203","mon_id":"1159278","chapter_id":"1159331","question":"<p>Th\u1ed1ng kê s\u1ed1 hoa \u0111i\u1ec3m m\u01b0\u1eddi trong tu\u1ea7n thi \u0111ua c\u1ee7a 100 h\u1ecdc sinh kh\u1ed1i 9 nh\u01b0 sau:<br \/>50 38 35 38 50 38 27 38 47 27 27 35 38 32 38 32 35 32 35 32<br \/>38 38 35 32 35 38 38 50 32 47 27 38 35 27 47 35 38 38 32 35<br \/>35 35 27 32 38 35 32 32 38 32 38 35 27 38 27 38 27 32 38 38<br \/>38 32 38 32 35 27 35 38 32 27 50 32 27 35 47 32 38 27 32 32<br \/>38 27 35 38 35 47 35 38 35 38 35 35 35 35 35 27 50 38 32 38<\/p><p>T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb 32 là<\/p>","options":["<strong>A.<\/strong> 15%","<strong>B.<\/strong> 20%","<strong>C.<\/strong> 25%","<strong>D.<\/strong> 30%"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 20%.<\/span><\/p><p>T\u1ed5ng s\u1ed1 h\u1ecdc sinh là 100 nên ta có n = 100.<br \/>Có 20 b\u1ea1n \u0111\u1ea1t 32 hoa \u0111i\u1ec3m m\u01b0\u1eddi nên m = 20.<br \/>T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb 32 là: <span class=\"math-tex\">$f=\\dfrac{m}{n}.100\\%=\\dfrac{20}{100}.100\\%=20\\%$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-22 09:20:11","option_type":"txt","len":0},{"id":"9225","post_id":"8203","mon_id":"1159278","chapter_id":"1159331","question":"<p>Kh\u1ed1i l\u01b0\u1ee3ng th\u1ee9c \u0103n trung bình (\u0111\u01a1n v\u1ecb: gam) trong m\u1ed9t ngày cho m\u1ed7i con heo c\u1ee7a m\u1ed9t s\u1ed1 h\u1ed9 gia \u0111ình \u0111\u01b0\u1ee3c th\u1ed1ng kê nh\u01b0 sau. <\/p><p>2200 2150 2100 2100 2200 2200 2100 2200 2100 2050<\/p><p>2100 2200 2200 2150 2050 2150 2200 2050 2100 2050<\/p><p>2150 2100 2050 2200 2150 2100 2150 2100 2200 2200<\/p><p>2100 2100 2050 2150 2100 2150 2150 2100 2150 2100<\/p><p>2100 2050 2100 2200 2200 2100 2100 2150 2200 2150<\/p><p>T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb 2100 là:<\/p>","options":["<strong>A.<\/strong> 36%","<strong>B.<\/strong> 30%","<strong>C. <\/strong>28%","<strong>D.<\/strong> 32%"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 36%.<\/span><\/p><p>H\u1ed9 gia \u0111ình có t\u1ea5t c\u1ea3 50 con heo, trong \u0111ó có 18 con có kh\u1ed1i l\u01b0\u1ee3ng th\u1ee9c \u0103n trung bình m\u1ed9t ngày là 2100 g nên m = 18; n = 50.<br \/>T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb 2100 là: <span class=\"math-tex\">$f=\\dfrac{m}{n}.100\\%=\\dfrac{18}{50}.100\\%=36\\%$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-22 09:32:48","option_type":"txt","len":0},{"id":"9226","post_id":"8203","mon_id":"1159278","chapter_id":"1159331","question":"<p>Trong bài th\u01a1 “Quê h\u01b0\u01a1ng” c\u1ee7a tác gi\u1ea3 \u0110\u1ed7 Trung Quân có hai câu th\u01a1: <br \/>“Quê h\u01b0\u01a1ng n\u1ebfu ai không nh\u1edb<br \/>S\u1ebd không l\u1edbn n\u1ed5i thành ng\u01b0\u1eddi”.<br \/>L\u1eadp m\u1eabu d\u1eef li\u1ec7u th\u1ed1ng kê, các ch\u1eef cái H; N; G; L l\u1ea7n l\u01b0\u1ee3t xu\u1ea5t hi\u1ec7n trong hai câu th\u01a1 trên thì t\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb N là:<\/p>","options":["<strong>A.<\/strong> 40%","<strong>B.<\/strong> 42%","<strong>C.<\/strong> 48%","<strong>D.<\/strong> 45%"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 45%.<\/span><\/p><p>M\u1eabu d\u1eef li\u1ec7u th\u1ed1ng kê các ch\u1eef cái H; N; G; L l\u1ea7n l\u01b0\u1ee3t xu\u1ea5t hi\u1ec7n trong hai câu th\u01a1 trên là: H; N; G; N; H; N; G; N; H; H; N; G; L; N; N; H; N; H; N; G. <br \/>Nh\u01b0 v\u1eady t\u1ea7n s\u1ed1 c\u1ee7a giá tr\u1ecb N là m = 9.<br \/>T\u1ed5ng s\u1ed1 ch\u1eef cái H; N; G; L là: n = 20.<br \/>T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a giá tr\u1ecb N là: <span class=\"math-tex\">$f=\\dfrac{m}{n}.100\\%=\\dfrac{9}{20}.100\\%=45\\%$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-12-22 09:36:47","option_type":"txt","len":0}]}