Ôn tập một số yếu tố thống kê và xác suất

Home Lớp 4 Toán lớp 4 - Sách Kết nối tri thức Bài 72. Ôn tập một số yếu tố thống kê và xác suấtBài tập nâng cao

{"common":{"save":0,"post_id":"6881","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2858","post_id":"6881","mon_id":"1159012","chapter_id":"1159027","question":"Bi\u1ec3u \u0111\u1ed3 d\u01b0\u1edbi \u0111ây cho bi\u1ebft s\u1ed1 h\u1ecdc sinh \u0111\u1ebfn th\u01b0 vi\u1ec7n m\u01b0\u1ee3n sách t\u1eeb th\u1ee9 2 \u0111\u1ebfn th\u1ee9 6 trong tu\u1ea7n v\u1eeba qua.<\/p><svg height=\"300\" width=\"400\"> <g><title><\/title><rect fill=\"#fff\" height=\"302\" id=\"canvas_background\" width=\"402\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_33\" stroke=\"null\"> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" 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stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1,0,0,0.9576752781867981,0,11.91688398799306) \" x=\"248.00001\" xml:space=\"preserve\" y=\"278.29001\">Th\u1ee9 5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_19\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1,0,0,0.9576752781867981,0,11.91688398799306) \" x=\"308.00001\" xml:space=\"preserve\" y=\"278.29001\">Th\u1ee9 6<\/text> <g id=\"svg_32\" stroke=\"null\"> <g id=\"svg_30\" opacity=\"0.6\" stroke=\"null\"> <g id=\"svg_21\" stroke=\"null\"> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_1\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"33.00001\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_2\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"64.18183\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_3\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"95.36364\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_4\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"126.54546\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_5\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"157.72728\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_6\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"188.9091\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_7\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"220.09092\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_8\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"251.27273\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_9\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"282.45455\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_10\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"313.63637\" y=\"55.29001\"><\/rect> <rect fill=\"#fff\" height=\"207.81552\" id=\"svg_11\" stroke=\"#bf0000\" stroke-width=\"1.5\" width=\"31.18182\" x=\"344.81819\" y=\"55.29001\"><\/rect> <\/g> <rect fill=\"none\" height=\"343.00002\" id=\"svg_22\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,451.29005432128906,52.41699429873822) \" width=\"31\" x=\"189.00001\" y=\"75.29004\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_24\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,420.29005432128906,22.729060674947505) \" width=\"31\" x=\"189.00001\" y=\"44.29004\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_25\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,389.29005432128906,-6.958872948843236) \" width=\"31\" x=\"189.00001\" y=\"13.29004\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_26\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,358.29005432128906,-36.64680657263398) \" width=\"31\" x=\"189.00001\" y=\"-17.70996\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_27\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,327.29004669189453,-66.33474750290725) \" width=\"31\" x=\"189.00001\" y=\"-48.70996\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_28\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,296.29005432128906,-96.02267382021546) \" width=\"31\" x=\"189.00001\" y=\"-79.70996\"><\/rect> <rect fill=\"none\" height=\"343.00002\" id=\"svg_29\" stroke=\"#bf0000\" stroke-opacity=\"null\" stroke-width=\"1.5\" transform=\"matrix(0,0.9576752781867981,-1,0,265.29005432128906,-125.7106074440062) \" width=\"31\" x=\"189.00001\" y=\"-110.70996\"><\/rect> <\/g> <rect fill=\"none\" height=\"207.81554\" id=\"svg_31\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"342.99999\" x=\"33.00002\" y=\"55.29\"><\/rect> <\/g> <\/g> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" font-weight=\"bold\" id=\"svg_34\" stroke=\"#ff0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"26.00001\" xml:space=\"preserve\" y=\"23.29\">S\u1ed1 h\u1ecdc sinh \u0111\u1ebfn th\u01b0 vi\u1ec7n m\u01b0\u1ee3n sách<\/text> <text fill=\"#7f0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" font-weight=\"bold\" id=\"svg_35\" stroke=\"#ff0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"351.00001\" xml:space=\"preserve\" y=\"288.29001\">(Ngày)<\/text> <text fill=\"#7f0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_36\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"1.00001\" xml:space=\"preserve\" y=\"46.29\">(h\u1ecdc sinh)<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_37\" stroke=\"#ff0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"16.00001\" xml:space=\"preserve\" y=\"271.29001\">0<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_38\" stroke=\"#ff0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"9.00001\" xml:space=\"preserve\" y=\"241.29001\">20<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_44\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"9.00001\" xml:space=\"preserve\" y=\"210.29001\">40<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_45\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"9.00001\" xml:space=\"preserve\" y=\"181.29001\">60<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_46\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"9.00001\" xml:space=\"preserve\" y=\"152.29001\">80<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_47\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"0.00001\" xml:space=\"preserve\" y=\"121.29001\">100<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_48\" stroke=\"#ff0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"0\" xml:space=\"preserve\" y=\"91.29001\">120<\/text> <rect fill=\"#ffaaff\" height=\"98\" id=\"svg_49\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"31\" x=\"64.00001\" y=\"165.29001\"><\/rect> <rect fill=\"#ffaaff\" height=\"74\" id=\"svg_50\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"31\" x=\"126.00001\" y=\"189.29\"><\/rect> <rect fill=\"#ffaaff\" height=\"119\" id=\"svg_51\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"31\" x=\"189.00001\" y=\"144.29001\"><\/rect> <rect fill=\"#ffaaff\" height=\"170.99999\" id=\"svg_52\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"31\" x=\"251.00001\" y=\"92.29004\"><\/rect> <rect fill=\"#ffaaff\" height=\"155\" id=\"svg_53\" stroke=\"#7f0000\" stroke-width=\"1.5\" width=\"31\" x=\"314.00001\" y=\"108.29003\"><\/rect> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_54\" stroke=\"#7f0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"132.00001\" xml:space=\"preserve\" y=\"187.29001\">50<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_57\" stroke=\"#7f0000\" stroke-width=\"0\" style=\"cursor: move;\" text-anchor=\"start\" x=\"70.00001\" xml:space=\"preserve\" y=\"162.29001\">65<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_58\" stroke=\"#7f0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"194.00001\" xml:space=\"preserve\" y=\"138.29001\">80<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_59\" stroke=\"#7f0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"252.00001\" xml:space=\"preserve\" y=\"82.29\">115<\/text> <text fill=\"#ff0000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"17\" id=\"svg_60\" stroke=\"#7f0000\" stroke-width=\"0\" text-anchor=\"start\" x=\"314.00001\" xml:space=\"preserve\" y=\"102.29001\">105<\/text> <\/g> <\/svg><\/span><\/p>Trung bình m\u1ed7i ngày có bao nhiêu h\u1ecdc sinh \u0111\u1ebfn th\u01b0 vi\u1ec7n m\u01b0\u1ee3n sách?<\/p>","options":["84","82","83","85"],"correct":"3","level":"3","hint":"","answer":"Trung bình m\u1ed7i ngày có s\u1ed1 h\u1ecdc sinh \u0111\u1ebfn th\u01b0 vi\u1ec7n m\u01b0\u1ee3n sách là:<\/p>(65 + 50 + 80 + 115 + 105) : 5  = 83 (h\u1ecdc sinh)<\/p>Ch\u1ecdn con c\u1eebu ch\u1ee9a s\u1ed1 83<\/strong><\/span>.<\/p>","type":"choose","extra_type":"sheep","time":"0","user_id":"131","test":"0","date":"2024-02-15 02:38:16","option_type":"txt","len":0},{"id":"2870","post_id":"6881","mon_id":"1159012","chapter_id":"1159027","question":"Trong h\u1ed9p có 2 qu\u1ea3 bóng màu \u0111\u1ecf và 2 qu\u1ea3 bóng màu vàng có kích th\u01b0\u1edbc và hình d\u1ea1ng gi\u1ed1ng nhau. Không nhìn vào trong túi, An l\u1ea5y ra 2 qu\u1ea3 bóng b\u1ea5t kì và quan sát màu c\u1ee7a 2 qu\u1ea3 bóng l\u1ea5y \u0111\u01b0\u1ee3c. Có bao nhiêu s\u1ef1 ki\u1ec7n có th\u1ec3 x\u1ea3y ra?<\/p><svg height=\"160\" width=\"230\"> <g><title><\/title><rect fill=\"#fff\" height=\"162\" id=\"canvas_background\" width=\"232\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_7\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_6\"> <rect fill=\"#d4aaff\" height=\"148\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"217\" x=\"6.00001\" y=\"6.29\"><\/rect> <ellipse cx=\"56.00001\" cy=\"80.79001\" fill=\"#ff5656\" id=\"svg_2\" rx=\"26\" ry=\"25.5\" stroke=\"#ff0000\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"176.00001\" cy=\"75.79001\" fill=\"#ffff00\" id=\"svg_3\" rx=\"26\" ry=\"25.5\" stroke=\"#ffff00\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"87.00001\" cy=\"124.79001\" fill=\"#ffff00\" id=\"svg_4\" rx=\"26\" ry=\"25.5\" stroke=\"#ffff00\" stroke-width=\"1.5\"><\/ellipse> <ellipse cx=\"150.00001\" cy=\"125.79001\" fill=\"#ff5656\" id=\"svg_5\" rx=\"26\" ry=\"25.5\" stroke=\"#ff0000\" stroke-width=\"1.5\"><\/ellipse> <\/g> <\/g> <\/svg><\/span><\/p>","options":["2","3","4","1"],"correct":"2","level":"3","hint":"","answer":"Có 3 s\u1ef1 ki\u1ec7n có th\u1ec3 x\u1ea3y ra là:<\/p>+ L\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng màu \u0111\u1ecf<\/p>+ L\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng màu vàng<\/p>+ L\u1ea5y \u0111\u01b0\u1ee3c 1 qu\u1ea3 bóng màu \u0111\u1ecf và 1 qu\u1ea3 bóng màu vàng<\/p>Ch\u1ecdn ngôi sao ghi s\u1ed1 3<\/strong><\/span>.<\/p>","type":"choose","extra_type":"star","time":"0","user_id":"131","test":"0","date":"2024-02-15 03:16:29","option_type":"txt","len":0},{"id":"2874","post_id":"6881","mon_id":"1159012","chapter_id":"1159027","question":"Trong h\u1ed9p có 2 qu\u1ea3 bóng màu \u0111\u1ecf và 2 qu\u1ea3 bóng màu vàng có kích th\u01b0\u1edbc và hình d\u1ea1ng gi\u1ed1ng nhau. Không nhìn vào trong túi, An l\u1ea5y ra 2 qu\u1ea3 bóng b\u1ea5t kì, quan sát và ghi l\u1ea1i màu c\u1ee7a 2 qu\u1ea3 bóng l\u1ea5y \u0111\u01b0\u1ee3c. An th\u1ef1c hi\u1ec7n 20 l\u1ea7n thì thu \u0111\u01b0\u1ee3c b\u1ea3ng sau:<\/p> <svg height=\"170\" width=\"355\"> <g><title><\/title><rect fill=\"#fff\" height=\"172\" id=\"canvas_background\" width=\"357\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_8\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_29\" stroke=\"null\"> <rect fill=\"#ffaaaa\" height=\"53\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"345.00001\" x=\"5.00001\" y=\"5.29\"><\/rect> <rect fill=\"#ffffaa\" height=\"53\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"345.00001\" x=\"5.00001\" y=\"58.29\"><\/rect> <rect fill=\"#aaffaa\" height=\"53\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"345.00001\" x=\"5.00001\" y=\"111.29\"><\/rect> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"190.35991\" x2=\"190.3599\" y1=\"5.29\" y2=\"165.29001\"><\/line> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_5\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8868894550334261,0,0,1,0.5655538574743968,0) \" x=\"31.00001\" xml:space=\"preserve\" y=\"37.29\">2 bóng màu \u0111\u1ecf<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_6\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8868894550334261,0,0,1,0.5655538574743968,0) \" x=\"23.00001\" xml:space=\"preserve\" y=\"92.29\">2 bóng màu vàng<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_7\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8868894550334261,0,0,1,0.5655538574743968,0) \" x=\"17.00001\" xml:space=\"preserve\" y=\"133.29001\">1 bóng màu \u0111\u1ecf và<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.8868894550334261,0,0,1,0.5655538574743968,0) \" x=\"19.00001\" xml:space=\"preserve\" y=\"158.29001\">1 bòng màu vàng<\/text> <\/g> <line fill=\"none\" id=\"svg_11\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"223.00001\" x2=\"223.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_12\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"233.00001\" x2=\"233.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_13\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"243.00001\" x2=\"243.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_14\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"253.00001\" x2=\"253.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_15\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"223.00001\" x2=\"223.00001\" y1=\"67.29\" y2=\"103.29\"><\/line> <line fill=\"none\" id=\"svg_16\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"233.00001\" x2=\"233.00001\" y1=\"67.29\" y2=\"103.29\"><\/line> <line fill=\"none\" id=\"svg_17\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"243.00001\" x2=\"243.00001\" y1=\"67.29\" y2=\"103.29\"><\/line> <line fill=\"none\" id=\"svg_18\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"253.00001\" x2=\"253.00001\" y1=\"67.29\" y2=\"103.29\"><\/line> <line fill=\"none\" id=\"svg_19\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"223.00001\" x2=\"223.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_20\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"233.00001\" x2=\"233.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_21\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"243.00001\" x2=\"243.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_22\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"253.00001\" x2=\"253.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_24\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"273.00001\" x2=\"273.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_25\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"272.00001\" x2=\"272.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_27\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"282.00001\" x2=\"282.00001\" y1=\"12.29\" y2=\"48.29\"><\/line> <line fill=\"none\" id=\"svg_9\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"282.00001\" x2=\"282.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" id=\"svg_30\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"291.00001\" x2=\"291.00001\" y1=\"119.29\" y2=\"155.29\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_31\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"215.00001\" x2=\"259.00001\" y1=\"45.29001\" y2=\"20.29\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_32\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"212.00001\" x2=\"259.00001\" y1=\"101.29001\" y2=\"74.29001\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_33\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"262.00001\" x2=\"214.00001\" y1=\"126.29001\" y2=\"151.29001\"><\/line> <\/g> <\/svg><\/span><\/p>S\u1ef1 ki\u1ec7n l\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng cùng màu xu\u1ea5t hi\u1ec7n m\u1ea5y l\u1ea7n?<\/p>","options":["11","8","12","13"],"correct":"3","level":"3","hint":"","answer":"L\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng màu \u0111\u1ecf 7 l\u1ea7n. <\/p>L\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng màu vàng 5 l\u1ea7n.<\/p>S\u1ef1 ki\u1ec7n l\u1ea5y \u0111\u01b0\u1ee3c 2 qu\u1ea3 bóng cùng màu xu\u1ea5t hi\u1ec7n s\u1ed1 l\u1ea7n là:<\/p>7 + 5 = 12 (l\u1ea7n)<\/p>Ch\u1ecdn qu\u1ea3 bóng ch\u1ee9a s\u1ed1 12<\/strong><\/span>.<\/p>","type":"choose","extra_type":"balloon","time":"0","user_id":"131","test":"0","date":"2024-02-15 03:29:50","option_type":"txt","len":0}]}