Tỉ số của số lần lặp lại một sự kiện so với tổng số lần thực hiện

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Bài 65. Tỉ số của số lần lặp lại một sự kiện so với tổng số lần thực hiện

{"common":{"save":0,"post_id":"9069","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4961","post_id":"9069","mon_id":"1159414","chapter_id":"1159499","question":"Tung m\u1ed9t \u0111\u1ed3ng xu có hai m\u1eb7t s\u1ea5p và m\u1eb7t ng\u1eeda. K\u1ebft qu\u1ea3 tung \u0111\u1ed3ng xu 10 l\u1ea7n nh\u01b0 sau:<\/p><svg height=\"135\" width=\"300\"> <g><title><\/title><rect fill=\"#fff\" height=\"137\" id=\"canvas_background\" width=\"302\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_3\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><rect fill=\"#ffff56\" height=\"67\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"293\" x=\"2.89999\" y=\"2.65\"><\/rect> <rect fill=\"#aaaaff\" height=\"60.99999\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"293\" x=\"2.89999\" y=\"69.65\"><\/rect> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"104.89999\" x2=\"105\" y1=\"1.65\" y2=\"131.64999\"><\/line> <line fill=\"none\" id=\"svg_5\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"200.89999\" x2=\"201\" y1=\"1.65\" y2=\"131.64999\"><\/line> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.89999\" xml:space=\"preserve\" y=\"36.65\">Kh\u1ea3 n\u0103ng<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"22.89999\" xml:space=\"preserve\" y=\"96.65\">S\u1ed1 l\u1ea7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"20.89999\" xml:space=\"preserve\" y=\"120.64999\">l\u1eb7p l\u1ea1i<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"108.89999\" xml:space=\"preserve\" y=\"28.65\">M\u1eb7t ng\u1eeda<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"111.89999\" xml:space=\"preserve\" y=\"59.65\">xu\u1ea5t hi\u1ec7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"216.89999\" xml:space=\"preserve\" y=\"28.65\">M\u1eb7t s\u1ea5p<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"209.89999\" xml:space=\"preserve\" y=\"59.65\">xu\u1ea5t hi\u1ec7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"140.89999\" xml:space=\"preserve\" y=\"108.14999\">4<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"241.89999\" xml:space=\"preserve\" y=\"108.14999\">6<\/text> <\/g> <\/svg><\/span><\/p>Tính t\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t ng\u1eeda xu\u1ea5t hi\u1ec7n so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu.<\/p>","options":["A.<\/strong> $\\dfrac{3}{5}$<\/span>.","B.<\/strong> $\\dfrac{1}{5}$<\/span>.","C.<\/strong> $\\dfrac{4}{5}$<\/span>.","D.<\/strong> $\\dfrac{2}{5}$<\/span>."],"correct":"4","level":"1","hint":"","answer":"Ch\u1ecdn D.<\/strong> $\\dfrac{2}{5}$<\/span>.<\/span><\/p>S\u1ed1 l\u1ea7n m\u1eb7t ng\u1eeda xu\u1ea5t hi\u1ec7n là 4; t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là 10.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t ng\u1eeda xu\u1ea5t hi\u1ec7n so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là: $\\dfrac{4}{10}=\\dfrac{2}{5}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 08:50:39","option_type":"math","len":0},{"id":"4962","post_id":"9069","mon_id":"1159414","chapter_id":"1159499","question":"Tung m\u1ed9t \u0111\u1ed3ng xu có hai m\u1eb7t s\u1ea5p và m\u1eb7t ng\u1eeda. K\u1ebft qu\u1ea3 tung \u0111\u1ed3ng xu 10 l\u1ea7n nh\u01b0 sau:<\/p><svg height=\"135\" width=\"300\"> <g><title><\/title><rect fill=\"#fff\" height=\"137\" id=\"canvas_background\" width=\"302\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_3\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><rect fill=\"#ffff56\" height=\"67\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"293\" x=\"2.89999\" y=\"2.65\"><\/rect> <rect fill=\"#aaaaff\" height=\"60.99999\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"293\" x=\"2.89999\" y=\"69.65\"><\/rect> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"104.89999\" x2=\"105\" y1=\"1.65\" y2=\"131.64999\"><\/line> <line fill=\"none\" id=\"svg_5\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"200.89999\" x2=\"201\" y1=\"1.65\" y2=\"131.64999\"><\/line> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.89999\" xml:space=\"preserve\" y=\"36.65\">Kh\u1ea3 n\u0103ng<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"22.89999\" xml:space=\"preserve\" y=\"96.65\">S\u1ed1 l\u1ea7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"20.89999\" xml:space=\"preserve\" y=\"120.64999\">l\u1eb7p l\u1ea1i<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"108.89999\" xml:space=\"preserve\" y=\"28.65\">M\u1eb7t ng\u1eeda<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"111.89999\" xml:space=\"preserve\" y=\"59.65\">xu\u1ea5t hi\u1ec7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"216.89999\" xml:space=\"preserve\" y=\"28.65\">M\u1eb7t s\u1ea5p<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"209.89999\" xml:space=\"preserve\" y=\"59.65\">xu\u1ea5t hi\u1ec7n<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"140.89999\" xml:space=\"preserve\" y=\"108.14999\">4<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"241.89999\" xml:space=\"preserve\" y=\"108.14999\">6<\/text> <\/g> <\/svg><\/span><\/p>Tính t\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t s\u1ea5p xu\u1ea5t hi\u1ec7n so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu.<\/p>","options":["A.<\/strong> $\\dfrac{3}{5}$<\/span>.","B.<\/strong> $\\dfrac{2}{5}$<\/span>.","C.<\/strong> $\\dfrac{4}{5}$<\/span>.","D.<\/strong> $\\dfrac{1}{5}$<\/span>."],"correct":"1","level":"1","hint":"","answer":"Ch\u1ecdn A.<\/strong> $\\dfrac{3}{5}$<\/span>.<\/span><\/p>S\u1ed1 l\u1ea7n m\u1eb7t s\u1ea5p xu\u1ea5t hi\u1ec7n là 6; t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là 10.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t s\u1ea5p xu\u1ea5t hi\u1ec7n so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là: $\\dfrac{6}{10}=\\dfrac{3}{5}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 08:52:54","option_type":"math","len":0},{"id":"4964","post_id":"9069","mon_id":"1159414","chapter_id":"1159499","question":"Trong m\u1ed9t trò ch\u01a1i ném phi tiêu, m\u1ed7i ng\u01b0\u1eddi ch\u01a1i \u0111\u01b0\u1ee3c ném t\u1ed1i \u0111a 8 l\u1ea7n. An \u0111ã ném trúng 3 l\u1ea7n vào tâm. T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n An ném trúng vào tâm so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n ném là:<\/p>","options":["A.<\/strong> $\\dfrac{8}{3}$<\/span>.","B.<\/strong> $\\dfrac{5}{8}$<\/span>.","C.<\/strong> $\\dfrac{3}{8}$<\/span>.","D.<\/strong> $\\dfrac{8}{5}$<\/span>."],"correct":"3","level":"1","hint":"","answer":"Ch\u1ecdn C.<\/strong> $\\dfrac{3}{8}$<\/span>.<\/span><\/p>S\u1ed1 l\u1ea7n An ném trúng vào tâm là 3; t\u1ed5ng s\u1ed1 l\u1ea7n ném là 8.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n An ném trúng vào tâm so v\u1edbi t\u1ed5ng s\u1ed1 l\u1ea7n ném là: $\\dfrac{3}{8}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 08:56:22","option_type":"math","len":0}]}