Bài tập cuối chương VIII - Bài tập nâng cao

Home Lớp 8 Toán lớp 8 - Sách Kết nối tri thức Bài tập cuối chương 8Bài tập nâng cao

{"common":{"save":0,"post_id":"6671","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7021","post_id":"6671","mon_id":"1158921","chapter_id":"1158935","question":"S\u1ed1 v\u1ee5 tai n\u1ea1n giao thông trong m\u1ed9t ngày c\u1ee7a hai tháng 6 và tháng 7 \u1edf thành ph\u1ed1 X \u0111\u01b0\u1ee3c ghi l\u1ea1i trong b\u1ea3ng sau:<\/p><svg height=\"260\" width=\"270\"> <g><title><\/title><rect fill=\"#fff\" height=\"262\" id=\"canvas_background\" width=\"272\" 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_34\"> <g id=\"svg_26\" stroke=\"null\"> <rect fill=\"#56ffaa\" height=\"38.79246\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"0.81\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"39.60246\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"69.90906\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"101.42793\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"132.9468\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"164.46567\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"194.77227\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"226.29114\"><\/rect> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_14\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"155.68881\" x2=\"155.89271\" y1=\"0.81\" y2=\"256.59775\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.617742450489421,0,0,1.212264176499886,2.572312018642135,-0.453039031359979) \" x=\"4.30583\" xml:space=\"preserve\" y=\"23.04189\">S\u1ed1 v\u1ee5 tai n\u1ea1n trong 1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_17\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"181.0376\" xml:space=\"preserve\" y=\"21.39208\">S\u1ed1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_18\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"50.39208\">0\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_19\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"77.39208\">1\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_20\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"104.39208\">2<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_21\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"78.0376\" xml:space=\"preserve\" y=\"129.39208\">3<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_22\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"155.39208\">4<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_23\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"180.39208\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_24\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"73.0376\" xml:space=\"preserve\" y=\"205.39208\">>6<\/text> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_25\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"73.341\" x2=\"64.16859\" y1=\"246.89964\" y2=\"252.96096\"><\/line> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_27\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"61.81\">6<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_28\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"188.00001\" xml:space=\"preserve\" y=\"90.81001\">10<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_29\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"124.81001\">16<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_30\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"153.81001\">11<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_31\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"198.00001\" xml:space=\"preserve\" y=\"186.81001\">7<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_32\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"196.00001\" xml:space=\"preserve\" y=\"217.81001\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_33\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"248.81001\">6<\/text> <\/g> <\/g> <\/svg><\/span><\/p>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a bi\u1ebfn c\u1ed1 E: "Trong m\u1ed9t ngày x\u1ea3y ra nhi\u1ec1u nh\u1ea5t 2 v\u1ee5 tai n\u1ea1n giao thông".<\/p>","options":["A.<\/strong> $\\dfrac{30}{61}$<\/span>","B.<\/strong> $\\dfrac{32}{61}$<\/span>","C.<\/strong> $\\dfrac{26}{61}$<\/span>","D.<\/strong> $\\dfrac{16}{61}$<\/span>"],"correct":"2","level":"3","hint":"","answer":"S\u1ed1 ngày có nhi\u1ec1u nh\u1ea5t 2 v\u1ee5 tai n\u1ea1n giao thông x\u1ea3y ra c\u1ee7a tháng 6 và tháng 7 là:<\/p>6 + 10 + 16 = 32 (ngày)<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a bi\u1ebfn c\u1ed1 E: "Trong m\u1ed9t ngày x\u1ea3y ra nhi\u1ec1u nh\u1ea5t 2 v\u1ee5 tai n\u1ea1n giao thông" là:<\/p>$\\dfrac{32}{61}$<\/span> (tháng 6 và tháng 7 có 30 + 31 = 61 ngày)<\/p>Ch\u1ecdn B.<\/strong> $\\dfrac{32}{61}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-13 01:47:00","option_type":"math","len":0},{"id":"7024","post_id":"6671","mon_id":"1158921","chapter_id":"1158935","question":"S\u1ed1 v\u1ee5 tai n\u1ea1n giao thông trong m\u1ed9t ngày c\u1ee7a hai tháng 6 và tháng 7 \u1edf thành ph\u1ed1 X \u0111\u01b0\u1ee3c ghi l\u1ea1i trong b\u1ea3ng sau:<\/p><svg height=\"260\" width=\"270\"> <g><title><\/title><rect fill=\"#fff\" height=\"262\" id=\"canvas_background\" width=\"272\" 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_34\"> <g id=\"svg_26\" stroke=\"null\"> <rect fill=\"#56ffaa\" height=\"38.79246\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"0.81\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"39.60246\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"69.90906\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"101.42793\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"132.9468\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"164.46567\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"194.77227\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"226.29114\"><\/rect> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_14\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"155.68881\" x2=\"155.89271\" y1=\"0.81\" y2=\"256.59775\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.617742450489421,0,0,1.212264176499886,2.572312018642135,-0.453039031359979) \" x=\"4.30583\" xml:space=\"preserve\" y=\"23.04189\">S\u1ed1 v\u1ee5 tai n\u1ea1n trong 1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_17\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"181.0376\" xml:space=\"preserve\" y=\"21.39208\">S\u1ed1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_18\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"50.39208\">0\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_19\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"77.39208\">1\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_20\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"104.39208\">2<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_21\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"78.0376\" xml:space=\"preserve\" y=\"129.39208\">3<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_22\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"155.39208\">4<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_23\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"180.39208\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_24\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"73.0376\" xml:space=\"preserve\" y=\"205.39208\">>6<\/text> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_25\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"73.341\" x2=\"64.16859\" y1=\"246.89964\" y2=\"252.96096\"><\/line> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_27\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"61.81\">6<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_28\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"188.00001\" xml:space=\"preserve\" y=\"90.81001\">10<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_29\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"124.81001\">16<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_30\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"153.81001\">11<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_31\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"198.00001\" xml:space=\"preserve\" y=\"186.81001\">7<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_32\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"196.00001\" xml:space=\"preserve\" y=\"217.81001\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_33\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"248.81001\">6<\/text> <\/g> <\/g> <\/svg><\/span><\/p>Tính xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a bi\u1ebfn c\u1ed1 E: "Trong m\u1ed9t ngày x\u1ea3y ra nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông".<\/p>","options":["A.<\/strong> $\\dfrac{12}{61}$<\/span>","B.<\/strong> $\\dfrac{10}{61}$<\/span>","C.<\/strong> $\\dfrac{11}{61}$<\/span>","D.<\/strong> $\\dfrac{18}{61}$<\/span>"],"correct":"3","level":"3","hint":"","answer":"S\u1ed1 ngày có nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông x\u1ea3y ra c\u1ee7a tháng 6 và tháng 7 là:<\/p>5 + 6 = 11 (ngày)<\/p>Xác su\u1ea5t th\u1ef1c nghi\u1ec7m c\u1ee7a bi\u1ebfn c\u1ed1 E: "Trong m\u1ed9t ngày x\u1ea3y ra nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông" là:<\/p>$\\dfrac{11}{61}$<\/span><\/p>Ch\u1ecdn C.<\/strong> $\\dfrac{11}{61}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-13 01:56:05","option_type":"math","len":0},{"id":"7025","post_id":"6671","mon_id":"1158921","chapter_id":"1158935","question":"S\u1ed1 v\u1ee5 tai n\u1ea1n giao thông trong m\u1ed9t ngày c\u1ee7a hai tháng 6 và tháng 7 \u1edf thành ph\u1ed1 X \u0111\u01b0\u1ee3c ghi l\u1ea1i trong b\u1ea3ng sau:<\/p><svg height=\"260\" width=\"270\"> <g><title><\/title><rect fill=\"#fff\" height=\"262\" id=\"canvas_background\" width=\"272\" 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_34\"> <g id=\"svg_26\" stroke=\"null\"> <rect fill=\"#56ffaa\" height=\"38.79246\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"0.81\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"39.60246\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"69.90906\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"101.42793\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"132.9468\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"164.46567\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"194.77227\"><\/rect> <rect fill=\"#fff\" height=\"31.51887\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"1.5\" width=\"266\" x=\"2\" y=\"226.29114\"><\/rect> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_14\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"155.68881\" x2=\"155.89271\" y1=\"0.81\" y2=\"256.59775\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(0.617742450489421,0,0,1.212264176499886,2.572312018642135,-0.453039031359979) \" x=\"4.30583\" xml:space=\"preserve\" y=\"23.04189\">S\u1ed1 v\u1ee5 tai n\u1ea1n trong 1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_17\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"181.0376\" xml:space=\"preserve\" y=\"21.39208\">S\u1ed1 ngày<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_18\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"50.39208\">0\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_19\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"77.39208\">1\u200b\u200b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_20\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"79.0376\" xml:space=\"preserve\" y=\"104.39208\">2<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_21\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"78.0376\" xml:space=\"preserve\" y=\"129.39208\">3<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_22\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"155.39208\">4<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_23\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"77.0376\" xml:space=\"preserve\" y=\"180.39208\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_24\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" transform=\"matrix(1.0191570520401,0,0,1.2122641764998863,-11.287355780601503,1.5469609686400214) \" x=\"73.0376\" xml:space=\"preserve\" y=\"205.39208\">>6<\/text> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_25\" stroke=\"#000\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"73.341\" x2=\"64.16859\" y1=\"246.89964\" y2=\"252.96096\"><\/line> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_27\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"61.81\">6<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_28\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"188.00001\" xml:space=\"preserve\" y=\"90.81001\">10<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_29\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"124.81001\">16<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_30\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"189.00001\" xml:space=\"preserve\" y=\"153.81001\">11<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_31\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"198.00001\" xml:space=\"preserve\" y=\"186.81001\">7<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_32\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"196.00001\" xml:space=\"preserve\" y=\"217.81001\">5<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_33\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"197.00001\" xml:space=\"preserve\" y=\"248.81001\">6<\/text> <\/g> <\/g> <\/svg><\/span><\/p>D\u1ef1 \u0111oán xem trong ba tháng 8, 9, 10 t\u1edbi t\u1ea1i thành ph\u1ed1 X có bao nhiêu ngày x\u1ea3y ra nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông?<\/p>","options":["A.<\/strong> 17 ngày","B.<\/strong> 15 ngày","C.<\/strong> 19 ngày","D.<\/strong> 20 ngày"],"correct":"1","level":"3","hint":"","answer":"S\u1ed1 ngày có nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông x\u1ea3y ra c\u1ee7a tháng 6 và tháng 7 là:<\/p>5 + 6 = 11 (ngày)<\/p>Xác su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1: "Trong m\u1ed9t ngày x\u1ea3y ra nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông" \u0111\u01b0\u1ee3c \u01b0\u1edbc l\u01b0\u1ee3ng là:<\/p>$\\dfrac{11}{61}$<\/span><\/p>Trong ba tháng 8, 9, 10 t\u1edbi t\u1ea1i thành ph\u1ed1 X s\u1ed1 ngày x\u1ea3y ra nhi\u1ec1u h\u01a1n 4 v\u1ee5 tai n\u1ea1n giao thông là:<\/p>$\\dfrac{11}{61}$<\/span> . (31 + 30 + 31) ≈ 17 (ngày)<\/p>Ch\u1ecdn A.<\/strong> 17 ngày<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-09-13 02:01:36","option_type":"txt","len":2}]}