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

Home Lớp 5 Toán lớp 5 - Sách Kết nối tri thức Bài 65. Tỉ số của số lần lặp lại một sự kiện so với tổng số lần thực hiệnBài tập trung bình

{"common":{"save":0,"post_id":"9070","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4966","post_id":"9070","mon_id":"1159414","chapter_id":"1159499","question":"Tung m\u1ed9t \u0111\u1ed3ng xu có hai m\u1eb7t s\u1ea5p và ng\u1eeda \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 b\u1eb1ng 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\" style=\"cursor: move;\" text-anchor=\"start\" x=\"140.89999\" xml:space=\"preserve\" y=\"108.14999\">52<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"241.89999\" xml:space=\"preserve\" y=\"108.14999\">48<\/text> <\/g> <\/svg><\/span><\/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:<\/p>","options":["A.<\/strong> $\\dfrac{52}{99}$<\/span>.","B.<\/strong> $\\dfrac{12}{25}$<\/span>.","C.<\/strong> $\\dfrac{13}{25}$<\/span>.","D.<\/strong> $\\dfrac{16}{33}$<\/span>."],"correct":"2","level":"2","hint":"","answer":"Ch\u1ecdn B.<\/strong> $\\dfrac{12}{25}$<\/span>.<\/span><\/p>S\u1ed1 l\u1ea7n m\u1eb7t s\u1ea5p xu\u1ea5t hi\u1ec7n là 48.<\/p>T\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là 52 + 48 = 100.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t s\u1ea5p xu\u1ea5t hi\u1ec7n và t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là $\\dfrac{48}{100}=\\dfrac{12}{25}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 09:02:47","option_type":"math","len":0},{"id":"4968","post_id":"9070","mon_id":"1159414","chapter_id":"1159499","question":"Tung m\u1ed9t \u0111\u1ed3ng xu có hai m\u1eb7t s\u1ea5p và ng\u1eeda \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u01b0 b\u1eb1ng 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\" style=\"cursor: move;\" text-anchor=\"start\" x=\"140.89999\" xml:space=\"preserve\" y=\"108.14999\">52<\/text> <text fill=\"#000000\" font-family=\"Times New Roman, Times, serif\" font-size=\"24\" id=\"svg_14\" stroke=\"#000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"241.89999\" xml:space=\"preserve\" y=\"108.14999\">48<\/text> <\/g> <\/svg><\/span><\/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:<\/p>","options":["A.<\/strong> $\\dfrac{13}{100}$<\/span>.","B.<\/strong> $\\dfrac{13}{50}$<\/span>.","C.<\/strong> $\\dfrac{12}{25}$<\/span>.","D.<\/strong> $\\dfrac{13}{25}$<\/span>."],"correct":"4","level":"2","hint":"","answer":"Ch\u1ecdn D.<\/strong> $\\dfrac{13}{25}$<\/span>.<\/span><\/p>S\u1ed1 l\u1ea7n m\u1eb7t ng\u1eeda xu\u1ea5t hi\u1ec7n là 52.<\/p>T\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là 52 + 48 = 100.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t ng\u1eeda xu\u1ea5t hi\u1ec7n và t\u1ed5ng s\u1ed1 l\u1ea7n tung \u0111\u1ed3ng xu là $\\dfrac{52}{100}=\\dfrac{13}{25}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 09:03:38","option_type":"math","len":0},{"id":"4990","post_id":"9070","mon_id":"1159414","chapter_id":"1159499","question":"Trong m\u1ed9t l\u1ea7n ch\u01a1i xúc x\u1eafc, Nam \u0111ã tung m\u1ed9t con xúc x\u1eafc 20 l\u1ea7n liên ti\u1ebfp. Trong \u0111ó, th\u1ed1ng kê \u0111\u01b0\u1ee3c r\u1eb1ng có 7 l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t 3 ch\u1ea5m. T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t 3 ch\u1ea5m không xu\u1ea5t hi\u1ec7n và t\u1ed5ng s\u1ed1 l\u1ea7n tung là:<\/p>","options":["A.<\/strong> $\\dfrac{7}{20}$<\/span>.","B.<\/strong> $\\dfrac{3}{20}$<\/span>.","C.<\/strong> $\\dfrac{13}{20}$<\/span>.","D.<\/strong> $\\dfrac{17}{20}$<\/span>."],"correct":"3","level":"2","hint":"","answer":"Ch\u1ecdn C.<\/strong> $\\dfrac{13}{20}$<\/span>.<\/span><\/p>Vì m\u1eb7t 3 ch\u1ea5m xu\u1ea5t hi\u1ec7n 7 l\u1ea7n nên s\u1ed1 l\u1ea7n m\u1eb7t 3 ch\u1ea5m không xu\u1ea5t hi\u1ec7n là 20 – 7 = 13.<\/p>T\u1ec9 s\u1ed1 c\u1ee7a s\u1ed1 l\u1ea7n m\u1eb7t 3 ch\u1ea5m không xu\u1ea5t hi\u1ec7n và t\u1ed5ng s\u1ed1 l\u1ea7n tung là $\\dfrac{13}{20}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-27 10:10:13","option_type":"math","len":0}]}