{"common":{"save":0,"post_id":"6476","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6765","mon_id":"1158767","chapter_id":"1158893","post_id":"6476","question":"<p>Trong m\u1ed9t tr\u01b0\u1eddng THPT, kh\u1ed1i 10 có 140 h\u1ecdc sinh nam và 265 h\u1ecdc sinh n\u1eef. Nhà tr\u01b0\u1eddng c\u1ea7n ch\u1ecdn m\u1ed9t h\u1ecdc sinh \u1edf kh\u1ed1i 10 \u0111i tham d\u1ef1 ch\u01b0\u01a1ng trình tr\u1ea1i hè t\u1ec9nh A. H\u1ecfi nhà tr\u01b0\u1eddng có bao nhiêu cách ch\u1ecdn?<\/p>","options":["<strong>A. <\/strong>37100.","<strong>B. <\/strong>280.","<strong>C.<\/strong> 305.","<strong>D.<\/strong> 405."],"correct":"4","level":"1","hint":"","answer":"<p>N\u1ebfu ch\u1ecdn m\u1ed9t h\u1ecdc sinh nam có 140 cách.<br \/>N\u1ebfu ch\u1ecdn m\u1ed9t h\u1ecdc sinh n\u1eef có 265 cách.<br \/>Theo qui t\u1eafc c\u1ed9ng, ta có 140 + 265 = 405 cách ch\u1ecdn.<\/p><p>Ch\u1ecdn<span style=\"color:#16a085;\"> <strong>D.<\/strong> 405.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-05-29 06:21:44","option_type":"txt","len":0},{"id":"6766","mon_id":"1158767","chapter_id":"1158893","post_id":"6476","question":"<p>Gi\u1ea3 s\u1eed b\u1ea1n A mu\u1ed1n mua m\u1ed9t b\u1ed9 th\u1ec3 thao size S ho\u1eb7c size M. B\u1ed9 size S có 5 màu khác nhau, b\u1ed9 size M có 6 màu khác nhau. H\u1ecfi b\u1ea1n A có bao nhiêu s\u1ef1 l\u1ef1a ch\u1ecdn?<\/p>","options":["<strong>A. <\/strong>11.","<strong>B.<\/strong> 5.","<strong>C.<\/strong> 6.","<strong>D.<\/strong> 30."],"correct":"1","level":"1","hint":"","answer":"<p>N\u1ebfu ch\u1ecdn c\u1ee1 áo size S thì s\u1ebd có 5 cách.<br \/>N\u1ebfu ch\u1ecdn c\u1ee1 áo size M thì s\u1ebd có 6 cách.<\/p><p>Theo qui t\u1eafc c\u1ed9ng, ta có 5 + 6 = 11 cách ch\u1ecdn mua áo.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A. <\/strong>11.<\/span><\/p>","type":"choose","extra_type":"flower","user_id":"131","test":"0","date":"2023-05-29 06:23:31","option_type":"txt","len":0},{"id":"6768","mon_id":"1158767","chapter_id":"1158893","post_id":"6476","question":"<p>Trên giá sách có 6 quy\u1ec3n Toán 10, 10 quy\u1ec3n Hoá 10 và 8 quy\u1ec3n V\u1eadt lý 10 . M\u1ed9t h\u1ecdc sinh mu\u1ed1n ch\u1ecdn m\u1ed9t quy\u1ec3n sách duy nh\u1ea5t thì s\u1ed1 cách ch\u1ecdn khác nhau là:<\/p>","options":["<strong>A.<\/strong> 480.","<strong>B. <\/strong>24.","<strong>C. <\/strong>48.","<strong>D.<\/strong> 60."],"correct":"2","level":"1","hint":"","answer":"<p>N\u1ebfu ch\u1ecdn m\u1ed9t quy\u1ec3n V\u1eadt Lý 10 thì có 8 cách.<br \/>N\u1ebfu ch\u1ecdn m\u1ed9t quy\u1ec3n Toán 10 thì có 6 cách.<br \/>N\u1ebfu ch\u1ecdn m\u1ed9t quy\u1ec3n Hóa 10 thì có 10 cách.<br \/>Theo qui t\u1eafc c\u1ed9ng, ta có 8 + 6 + 10 = 24 cách ch\u1ecdn.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B. <\/strong>24.<\/span><\/p>","type":"choose","extra_type":"shape1","user_id":"131","test":"0","date":"2023-05-29 06:25:09","option_type":"txt","len":0}]}