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90:00
{"save":1,"level":1,"time":"90","total":34,"point":5,"segment":[{"id":"3542","test_id":"483","question":"<p>B\u1ea3ng sau \u0111ây bi\u1ec3u di\u1ec5n m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm th\u1ed1ng kê v\u1ec1 nhu c\u1ea7u m\u1ee9c giá mua nhà (\u0111\u01a1n v\u1ecb tri\u1ec7u \u0111\u1ed3ng\/m<sup>2<\/sup>) c\u1ee7a khách hàng t\u1ea1i m\u1ed9t công ty xây d\u1ef1ng.<\/p><p><span class=\"svgedit\"><svg height=\"71\" width=\"319\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>\\n<title><\/title>\\n<rect fill=\"#fff\" height=\"73\" id=\"canvas_background\" width=\"321\" 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>\\n<title><\/title>\\n<image height=\"72.06897\" id=\"svg_1\" stroke=\"null\" width=\"323\" x=\"-1.5\" xlink:href=\"data:image\/png;base64,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\" y=\"0\"><\/image> <\/g> <\/svg><\/span><\/p><p>Kho\u1ea3ng bi\u1ebfn thiên R c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm trên là<\/p>","options":["A. R = 108","B. R = 4","C. R = 9 ","D. R = 20"],"correct":"4","answer":"<p>\u0110áp án \u0111úng : <span style=\"color:#16a085;\"><strong>D. R = 20.<\/strong><\/span><\/p><p>Kho\u1ea3ng bi\u1ebfn thiên R c\u1ee7a m\u1eabu s\u1ed1 li\u1ec7u ghép nhóm trên là:<\/p><p><span class=\"math-tex\">$R=a_{10}-a_1=30-10=20$<\/span>.<\/p>","type":"choose","user_id":"156","test":"3","date":"2025-04-23 17:46:23"},{"id":"3543","test_id":"483","question":"<p>Cho hình chóp S.ABCD \u0111áy ABCD là hình bình hành, SA vuông góc v\u1edbi m\u1eb7t ph\u1eb3ng (ABCD).<br \/>Góc gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng nào sau \u0111ây b\u1eb1ng 90<sup>o<\/sup> ?<\/p><p> <\/p>","options":["<strong>A.<\/strong> SA, BD","<strong>B.<\/strong> SA, SC","<strong>C.<\/strong> SA, SB","<strong>D.<\/strong> SB, SD"],"correct":"1","answer":"<p>\u0110áp án \u0111úng : <span style=\"color:#16a085;\"><strong>A.<\/strong> SA, BD.<\/span><strong><span style=\"color:#16a085;\"><\/span><\/strong><\/p><p><span class=\"svgedit\"><svg height=\"230\" width=\"270\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>\\n<title><\/title>\\n<rect fill=\"#fff\" 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y=\"15.5\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"30\" font-weight=\"bold\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" transform=\"rotate(-18 129.53959655761727,158.54544067382812) \" x=\"8.31535\" xml:space=\"preserve\" y=\"169\">_ _ _ _ _ _ _ _ _ _<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"76.31535\" xml:space=\"preserve\" y=\"13\">S<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"74.31535\" xml:space=\"preserve\" y=\"135\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"1.31535\" xml:space=\"preserve\" y=\"219.00001\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"188.31535\" xml:space=\"preserve\" y=\"217.00001\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"16\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"255.31535\" xml:space=\"preserve\" y=\"136\">D<\/text> <\/g> <\/svg><\/span><\/p><p> <\/p><p>Vì SA <span class=\"math-tex\">$\\bot$<\/span> (ABCD) mà BD <span class=\"math-tex\">$\\subset$<\/span> (ABCD) nên SA <span class=\"math-tex\">$\\bot$<\/span> BD.<\/p>","type":"choose","user_id":"156","test":"1","date":"2025-04-23 17:50:05"}]}