{"common":{"save":0,"post_id":"4900","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9394","post_id":"4900","mon_id":"1158113","chapter_id":"1158165","question":"<p>Trong ngày l\u1ec5 h\u1ed9i t\u1ea1i \u0111\u1ecba ph\u01b0\u01a1ng, Lam có ch\u01a1i trò ch\u01a1i ném phi tiêu vào m\u1ed9t t\u1ea5m bìa có ghi các s\u1ed1 1 ; 5 ; 8. Lam ném 40 l\u1ea7n và ghi l\u1ea1i s\u1ed1 \u1edf ô mà phi tiêu trúng và \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau: 5 ; 1 ; 8 ; 5 ; 8 ; 8 ; 5 ; 1 ; 5 ; 8 ; 5 ; 8 ; 1 ; 1 ; 5 ; 8 ; 5 ; 8 ; 1 ; 5 ; 8 ; 5 ; 8 ; 5 ; 8 ; 1 ; 1 ; 5 ; 5 ; 1 ; 8 ; 8 ; 5 ; 1 ; 1 ; 8 ; 5 ; 8 ; 5 ; 1 .<\/p><p>Bi\u1ebft s\u1ef1 ki\u1ec7n "Phi tiêu trúng vào ô ghi s\u1ed1 n" xu\u1ea5t hi\u1ec7n 11 l\u1ea7n. V\u1eady n = ?<\/p><p>\u0110áp s\u1ed1 <span style=\"color:#3498db;\"><strong>n = <\/strong><\/span><input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/><\/p>","options":"","correct":["[\"1\"]"],"level":"2","hint":"","answer":"<p>S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1 <span style=\"color:#16a085;\">1 <\/span>là <strong>11 l\u1ea7n<\/strong>.<br \/>S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1 5 là 15 l\u1ea7n.<br \/>S\u1ed1 l\u1ea7n phi tiêu ném trúng ô s\u1ed1 8 là 14 l\u1ea7n.<\/p><p>V\u1eady <strong>n = 1<\/strong>.<\/p><p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>1<\/strong><\/span> .<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-10-14 11:46:02"},{"id":"9395","post_id":"4900","mon_id":"1158113","chapter_id":"1158165","question":"<p>Ng\u01b0\u1eddi ta gieo m\u1ed9t con xúc x\u1eafc 195 l\u1ea7n và ghi l\u1ea1i s\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n \u1edf m\u1ed7i l\u1ea7n gieo \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/p><table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width: 200px;\"><tbody> <tr> <td>S\u1ed1 ch\u1ea5m<\/td> <td>S\u1ed1 l\u1ea7n<\/td> <\/tr> <tr> <td>1<\/td> <td>30<\/td> <\/tr> <tr> <td>2<\/td> <td>37<\/td> <\/tr> <tr> <td>3<\/td> <td>34<\/td> <\/tr> <tr> <td>4<\/td> <td>44<\/td> <\/tr> <tr> <td>5<\/td> <td>15<\/td> <\/tr> <tr> <td>6<\/td> <td>35<\/td> <\/tr><\/tbody><\/table><p><strong>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 l\u1ebb".<\/strong> <\/p><p>(Vi\u1ebft k\u1ebft qu\u1ea3 d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n tr\u0103m)<\/p>","options":["41,51%","40,51%","51,40%","50,41%"],"correct":"2","level":"2","hint":"<p>Tính t\u1ed5ng s\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n c\u1ee7a m\u1eb7t có s\u1ed1 ch\u1ea5m là l\u1ebb: 1,3,5 (ch\u1ea5m).<\/p><p>R\u1ed3i chia cho t\u1ed5ng s\u1ed1 l\u1ea7n gieo.<\/p>","answer":"<p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 1 ch\u1ea5m là 30 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 3 ch\u1ea5m là 34 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 5 ch\u1ea5m là 15 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t l\u1ebb ch\u1ea5m là 30 + 34 + 15 = 79 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc là 195 l\u1ea7n<\/p><p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 l\u1ebb" là <\/p><p><span class=\"math-tex\">$\\dfrac{79}{195}$<\/span> . 100% ≈ 40,51%<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>40,51% .<\/strong><\/span><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"3","date":"2021-10-14 11:50:26","option_type":"txt","len":0},{"id":"9396","post_id":"4900","mon_id":"1158113","chapter_id":"1158165","question":"<p>Na gieo m\u1ed9t con xúc x\u1eafc 195 l\u1ea7n và ghi l\u1ea1i s\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n \u1edf m\u1ed7i l\u1ea7n gieo \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/p><table border=\"1\" cellpadding=\"1\" cellspacing=\"1\" style=\"width: 200px;\"><tbody> <tr> <td>S\u1ed1 ch\u1ea5m<\/td> <td>S\u1ed1 l\u1ea7n<\/td> <\/tr> <tr> <td>1<\/td> <td>30<\/td> <\/tr> <tr> <td>2<\/td> <td>37<\/td> <\/tr> <tr> <td>3<\/td> <td>34<\/td> <\/tr> <tr> <td>4<\/td> <td>44<\/td> <\/tr> <tr> <td>5<\/td> <td>15<\/td> <\/tr> <tr> <td>6<\/td> <td>35<\/td> <\/tr><\/tbody><\/table><p><strong>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 ch\u1eb5n".<\/strong> <\/p><p>(Vi\u1ebft k\u1ebft qu\u1ea3 d\u01b0\u1edbi d\u1ea1ng ph\u1ea7n tr\u0103m)<\/p>","options":["59,49%","59,48%","49,59%","49,58%"],"correct":"1","level":"2","hint":"","answer":"<p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 2 ch\u1ea5m là 37 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 4 ch\u1ea5m là 44 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 6 ch\u1ea5m là 35 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t ch\u1eb5n ch\u1ea5m là 37 + 44 + 35 = 116 l\u1ea7n<\/p><p>S\u1ed1 l\u1ea7n gieo con xúc s\u1eafc là 195 l\u1ea7n<\/p><p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a s\u1ef1 ki\u1ec7n "S\u1ed1 ch\u1ea5m xu\u1ea5t hi\u1ec7n là s\u1ed1 ch\u1eb5n" là <\/p><p><span class=\"math-tex\">$\\dfrac{116}{195}$<\/span> . 100% ≈ 59,49%<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <\/span><strong><span style=\"color:#16a085;\">59,49%<\/span> .<\/strong><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"1","date":"2021-10-14 11:54:41","option_type":"txt","len":0}]}