{"common":{"save":0,"post_id":"9031","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4909","post_id":"9031","mon_id":"1159414","chapter_id":"1159499","question":"<p>Cho dãy s\u1ed1 li\u1ec7u v\u1ec1 cân n\u1eb7ng c\u1ee7a các b\u1ea1n t\u1ed5 2 l\u1edbp 5C nh\u01b0 sau: <span style=\"color:#c0392b;\"><strong>40 kg; 50 kg; 32 kg; 34 kg; 41 kg; 36kg; 30 kg; 38 kg<\/strong><\/span>. D\u1ef1a vào \u0111ó hãy cho bi\u1ebft có bao nhiêu b\u1ea1n có cân n\u1eb7ng d\u01b0\u1edbi 40 kg?<\/p>","options":["<strong>A.<\/strong> 4 b\u1ea1n.","<strong>B.<\/strong> 6 b\u1ea1n.","<strong>C.<\/strong> 5 b\u1ea1n.","<strong>D.<\/strong> 3 b\u1ea1n."],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 5 b\u1ea1n.<\/span><\/p><p>Có 5 b\u1ea1n có cân n\u1eb7ng d\u01b0\u1edbi 40 kg.<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"0","date":"2025-04-23 08:36:22","option_type":"txt","len":0},{"id":"4910","post_id":"9031","mon_id":"1159414","chapter_id":"1159499","question":"<p>Cho dãy s\u1ed1 li\u1ec7u v\u1ec1 cân n\u1eb7ng c\u1ee7a các b\u1ea1n t\u1ed5 2 l\u1edbp 5C nh\u01b0 sau: <span style=\"color:#27ae60;\"><strong>40 kg; 50 kg; 32 kg; 34 kg; 41 kg; 36kg; 30 kg; 38 kg<\/strong><\/span>. D\u1ef1a vào \u0111ó hãy cho bi\u1ebft cân n\u1eb7ng trung bình c\u1ee7a các b\u1ea1n t\u1ed5 2 l\u1edbp 5C.<\/p>","options":["<strong>A.<\/strong> 32,675 kg.","<strong>B.<\/strong> 36,725 kg.","<strong>C.<\/strong> 37,526 kg.","<strong>D.<\/strong> 37,625 kg."],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 37,625 kg.<\/span><\/p><p>T\u1ed5ng cân n\u1eb7ng c\u1ee7a các b\u1ea1n t\u1ed5 2 l\u1edbp 5C là:<\/p><p>40 + 50 + 32 + 34 + 41 + 36 + 30 + 38 = 301 (kg).<\/p><p>Cân n\u1eb7ng trung bình c\u1ee7a các b\u1ea1n t\u1ed5 2 l\u1edbp 5C là:<\/p><p>301 : 8 = 37,625 (kg)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-23 08:40:32","option_type":"txt","len":1},{"id":"4913","post_id":"9031","mon_id":"1159414","chapter_id":"1159499","question":"<p>Cho dãy s\u1ed1 li\u1ec7u v\u1ec1 thành tích \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u1ee7a m\u1ed9t nhóm h\u1ecdc viên l\u1edbp nh\u1ea3y xa: <span style=\"color:#8e44ad;\"><strong>2,35 m; 3 m; 2,45 m; 2,8 m; 2,9 m; 2,2 m; 2,15 m; 3 m; 2,75 m; 2,5 m<\/strong><\/span>. Bi\u1ebft nh\u1eefng h\u1ecdc viên có thành tích d\u01b0\u1edbi 2 m 50 cm s\u1ebd ph\u1ea3i nh\u1ea3y thêm m\u1ed9t l\u1ea7n n\u1eefa. H\u1ecfi có bao nhiêu h\u1ecdc viên ph\u1ea3i nh\u1ea3y l\u1ea7n th\u1ee9 hai?<\/p>","options":["<strong>A.<\/strong> 4 h\u1ecdc viên.","<strong>B.<\/strong> 5 h\u1ecdc viên.","<strong>C.<\/strong> 3 h\u1ecdc viên.","<strong>D.<\/strong> 6 h\u1ecdc viên."],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 4 h\u1ecdc viên.<\/span><\/p><p>\u0110\u1ed5i: 2 m 50 cm = 2,5 m.<\/p><p>Có 4 h\u1ecdc viên có thành tích d\u01b0\u1edbi 2 m 50 cm là 2,35 m; 2,45 m; 2,2 m; 2,15 m.<\/p><p>V\u1eady có 4 h\u1ecdc viên ph\u1ea3i nh\u1ea3y l\u1ea7n th\u1ee9 hai.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-23 08:46:38","option_type":"txt","len":2}]}