{"common":{"save":0,"post_id":"1388","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"961","post_id":"1388","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["3"],["5"],["10"],["4"],["22"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":" <span class='basic_left'> Ng\u01b0\u1eddi ta th\u1ed1ng k\u00ea s\u1ed1 chim b\u1ed3 c\u00e2u c\u1ee7a c\u00e1c chu\u1ed3ng trong m\u1ed9t trang tr\u1ea1i ch\u0103n nu\u00f4i r\u1ed3i l\u1eadp b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d v\u00e0 bi\u1ec3u di\u1ec5n \u1edf bi\u1ec3u \u0111\u1ed3 sau theo s\u1ed1 chim b\u1ed3 c\u00e2u $(x)$ v\u00e0 \u201ct\u1ea7n s\u1ed1\u201d $(n)$ <center><img src='img\/D7B22TB1_1.png' \/><\/center> T\u1eeb bi\u1ec3u \u0111\u1ed3 tr\u00ean, h\u00e3y \u0111i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng trong b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>6<\/th><th>7<\/th><th>11<\/th><th>12<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>$N=$ _input_<\/td><\/tr><\/table> <\/span>","explain":"<span class='basic_left'> T\u1eeb bi\u1ec3u \u0111\u1ed3 ta c\u00f3 b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d t\u01b0\u01a1ng \u1ee9ng nh\u01b0 sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>6<\/th><th>7<\/th><th>11<\/th><th>12<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>3<\/td><td>5<\/td><td>10<\/td><td>4<\/td><td>$N=22$<\/td><\/tr><\/table> <br\/> <span class='basic_pink'> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0 $3;5;10;4;22.$<\/span><\/span>"}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:53"},{"id":"962","post_id":"1388","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["4"],["9"],["8"],["3"],["6"],["30"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":" <span class='basic_left'> Ng\u01b0\u1eddi ta th\u1ed1ng k\u00ea th\u1eddi gian gi\u1ea3i m\u1ed9t b\u00e0i to\u00e1n t\u00ednh theo ph\u00fat c\u1ee7a c\u00e1c h\u1ecdc sinh trong m\u1ed9t l\u1edbp h\u1ecdc r\u1ed3i l\u1eadp b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d v\u00e0 bi\u1ec3u di\u1ec5n \u1edf bi\u1ec3u \u0111\u1ed3 tr\u00ean theo th\u1eddi gian gi\u1ea3i m\u1ed9t b\u00e0i to\u00e1n t\u00ednh theo ph\u00fat $(x)$ v\u00e0 \u201ct\u1ea7n s\u1ed1\u201d $(n)$ <center><img src='img\/D7B22TB1_2.png' \/><\/center> T\u1eeb bi\u1ec3u \u0111\u1ed3 tr\u00ean, h\u00e3y \u0111i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng trong b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>3<\/th><th>4<\/th><th>6<\/th><th>8<\/th><th>9<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>$N=$ _input_<\/td><\/tr><\/table> <\/span>","explain":"<span class='basic_left'> T\u1eeb bi\u1ec3u \u0111\u1ed3 ta c\u00f3 b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d t\u01b0\u01a1ng \u1ee9ng nh\u01b0 sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>3<\/th><th>4<\/th><th>6<\/th><th>8<\/th><th>9<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>4<\/td><td>9<\/td><td>8<\/td><td>3<\/td><td>6<\/td><td>$N=30$<\/td><\/tr><\/table> <br\/> <span class='basic_pink'> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0 $4;9;8;3;6;30$<\/span><\/span>"}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:53"},{"id":"963","post_id":"1388","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" Cho bi\u1ec3u \u0111\u1ed3 h\u00ecnh ch\u1eef nh\u1eadt v\u1edbi tr\u1ee5c ho\u00e0nh l\u00e0 <b> gi\u00e1 tr\u1ecb $(x)$ <\/b> , tr\u1ee5c tung l\u00e0 <b>t\u1ea7n s\u1ed1 $(n)$<\/b>. <center><img src='img\/D7B22TB1_3.png' \/><\/center> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb l\u00e0: ","select":["A. $39$","B. $38$","C. $37$","D. $36$"],"explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb b\u1eb1ng t\u1ed5ng c\u00e1c t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb. <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Nh\u00ecn v\u00e0o bi\u1ec3u \u0111\u1ed3, ta c\u00f3: <br\/> - C\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau l\u00e0: $4;5;6;7;8;9$ <br\/> - T\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb tr\u00ean l\u00e0: $4; 7; 3;8;5;9$ <br\/> Do \u0111\u00f3, s\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb l\u00e0: <br\/> $N = 4+7+3+8+5+9=36$ <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span>","column":4}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:22:53"}]}