{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u ","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110i\u1ec3m ki\u1ec3m tra h\u1ecdc k\u00ec I m\u00f4n To\u00e1n c\u1ee7a $20$ b\u1ea1n trong m\u1ed9t l\u1edbp \u0111\u01b0\u1ee3c cho trong b\u1ea3ng sau: <br\/><table><tr><td>7<\/td><td>8<\/td><td>7<\/td><td>9<\/td><td>8<\/td><td>10<\/td><td>9<\/td><td>6<\/td><td>7<\/td><td>5<\/td><\/tr><tr><td>8<\/td><td>9<\/td><td>8<\/td><td>7<\/td><td>10<\/td><td>6<\/td><td>9<\/td><td>7<\/td><td>7<\/td><td>8<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> D\u1ea5u hi\u1ec7u \u1edf \u0111\u00e2y l\u00e0 \u0111i\u1ec3m ki\u1ec3m tra h\u1ecdc k\u00ec I m\u00f4n To\u00e1n c\u1ee7a $20$ b\u1ea1n trong m\u1ed9t l\u1edbp. \u0110\u00fang hay Sai? ","select":["\u0110\u00fang","Sai"],"hint":"V\u1ea5n \u0111\u1ec1 hay hi\u1ec7n t\u01b0\u1ee3ng m\u00e0 ng\u01b0\u1eddi \u0111i\u1ec1u tra quan t\u00e2m t\u00ecm hi\u1ec3u g\u1ecdi l\u00e0 d\u1ea5u hi\u1ec7u.","explain":" D\u1ea5u hi\u1ec7u \u1edf \u0111\u00e2y l\u00e0 \u0111i\u1ec3m ki\u1ec3m tra h\u1ecdc k\u00ec I m\u00f4n To\u00e1n c\u1ee7a m\u1ed7i b\u1ea1n trong m\u1ed9t l\u1edbp. <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 \u0110\u00fang.<\/span>","column":2}]}],"id_ques":891},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["20"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"\u0110i\u1ec3m ki\u1ec3m tra h\u1ecdc k\u00ec I m\u00f4n To\u00e1n c\u1ee7a $20$ b\u1ea1n trong m\u1ed9t l\u1edbp \u0111\u01b0\u1ee3c cho trong b\u1ea3ng sau: <br\/><table><tr><th>7<\/th><th>8<\/th><th>7<\/th><th>9<\/th><th>8<\/th><th>10<\/th><th>9<\/th><th>6<\/th><th>7<\/th><th>5<\/th><\/tr><tr><td>8<\/td><td>9<\/td><td>8<\/td><td>7<\/td><td>10<\/td><td>6<\/td><td>9<\/td><td>7<\/td><td>7<\/td><td>8<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0 _input_","hint":"\u1ee8ng v\u1edbi m\u1ed7i \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra c\u00f3 m\u1ed9t s\u1ed1 li\u1ec7u g\u1ecdi l\u00e0 m\u1ed9t gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u. S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u \u0111\u00fang b\u1eb1ng s\u1ed1 c\u00e1c \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra.","explain":"<span class='basic_left'> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u ch\u00ednh b\u1eb1ng s\u1ed1 b\u1ea1n \u0111\u01b0\u1ee3c \u0111i\u1ec1u tra l\u00e0 $20$. <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $20$.<\/span><\/span>"}]}],"id_ques":892},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["6"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"\u0110i\u1ec3m ki\u1ec3m tra h\u1ecdc k\u00ec I m\u00f4n To\u00e1n c\u1ee7a $20$ b\u1ea1n trong m\u1ed9t l\u1edbp \u0111\u01b0\u1ee3c cho trong b\u1ea3ng sau: <br\/><table><tr><th>7<\/th><th>8<\/th><th>7<\/th><th>9<\/th><th>8<\/th><th>10<\/th><th>9<\/th><th>6<\/th><th>7<\/th><th>5<\/th><\/tr><tr><td>8<\/td><td>9<\/td><td>8<\/td><td>7<\/td><td>10<\/td><td>6<\/td><td>9<\/td><td>7<\/td><td>7<\/td><td>8<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 3: <\/b> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0 _input_","hint":"","explain":"<span class='basic_left'> C\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau l\u00e0: $5;6;7;8;9;10$ <br\/>Do \u0111\u00f3 s\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau l\u00e0 $6$. <br\/> <span class='basic_pink'> V\u1eady c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $6$.<\/span><\/span>"}]}],"id_ques":893},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Khi \u0111i\u1ec1u tra n\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch $1$ ha, \u0111i\u1ec1u tra vi\u00ean \u0111\u00e3 ghi l\u1ea1i b\u1eb1ng b\u1ea3ng sau: <br\/> <table><tr><th>Th\u1ee9 t\u1ef1 th\u1eeda ru\u1ed9ng<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>N\u0103ng su\u1ea5t (t\u1ea1\/ha)<\/td><td>33<\/td><td>31<\/td><td>30<\/td><td>33<\/td><td>34<\/td><td>20<\/td><td>18<\/td><td>10<\/td><td>25<\/td><td>23<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> D\u1ea5u hi\u1ec7u \u1edf \u0111\u00e2y l\u00e0: ","select":["A. N\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch $1$ ha","B. T\u1ed5ng s\u1ed1 n\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch","C. Di\u1ec7n t\u00edch c\u1ee7a $10$ th\u1eeda ru\u1ed9ng","D. N\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa tr\u00ean m\u1ed9t th\u1eeda ru\u1ed9ng"],"explain":"<span class='basic_left'> D\u1ea5u hi\u1ec7u \u1edf \u0111\u00e2y l\u00e0 n\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch. <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span>","column":1}]}],"id_ques":894},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["10"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"Khi \u0111i\u1ec1u tra n\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch $1$ ha, \u0111i\u1ec1u tra vi\u00ean \u0111\u00e3 ghi l\u1ea1i b\u1eb1ng b\u1ea3ng sau: <br\/> <table><tr><th>Th\u1ee9 t\u1ef1 th\u1eeda ru\u1ed9ng<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>N\u0103ng su\u1ea5t (t\u1ea1\/ha)<\/td><td>33<\/td><td>31<\/td><td>30<\/td><td>33<\/td><td>34<\/td><td>20<\/td><td>18<\/td><td>10<\/td><td>25<\/td><td>23<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> S\u1ed1 \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0 _input_","explain":"<span class='basic_left'> \u0110i\u1ec1u tra n\u0103ng su\u1ea5t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng n\u00ean s\u1ed1 \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0 $10$. <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $10$.<\/span><\/span>"}]}],"id_ques":895},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["1"],["1"],["1"],["1"],["1"],["1"],["1"],["2"],["1"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"Khi \u0111i\u1ec1u tra n\u0103ng su\u1ea5t c\u1ee7a m\u1ed9t gi\u1ed1ng l\u00faa m\u1edbi tr\u00ean $10$ th\u1eeda ru\u1ed9ng c\u00f3 c\u00f9ng di\u1ec7n t\u00edch $1$ ha, \u0111i\u1ec1u tra vi\u00ean \u0111\u00e3 ghi l\u1ea1i b\u1eb1ng b\u1ea3ng sau: <br\/> <table><tr><th>Th\u1ee9 t\u1ef1 th\u1eeda ru\u1ed9ng<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>N\u0103ng su\u1ea5t (t\u1ea1\/ha)<\/td><td>33<\/td><td>31<\/td><td>30<\/td><td>33<\/td><td>34<\/td><td>20<\/td><td>18<\/td><td>10<\/td><td>25<\/td><td>23<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 3: <\/b> \u0110i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng trong b\u1ea3ng t\u1ea7n s\u1ed1 sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>10<\/th><th>18<\/th><th>20<\/th><th>23<\/th><th>25<\/th><th>30<\/th><th>31<\/th><th>33<\/th><th>34<\/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>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>_input_<\/td><td>$N=10$<\/td><\/tr><\/table>","explain":"<span class='basic_left'> Ta c\u00f3 b\u1ea3ng ''t\u1ea7n s\u1ed1'' d\u1ef1a theo b\u1ea3ng th\u1ed1ng k\u00ea ban \u0111\u1ea7u nh\u01b0 sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>10<\/th><th>18<\/th><th>20<\/th><th>23<\/th><th>25<\/th><th>30<\/th><th>31<\/th><th>33<\/th><th>34<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>2<\/td><td>1<\/td><td>$N=10$<\/td><\/tr><\/table> <br\/><span class='basic_pink'>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0: $1 ;1;1;1;1;1;1;2;1$<\/span> <\/span>"}]}],"id_ques":896},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Cho b\u1ea3ng ''t\u1ea7n s\u1ed1'' sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>1<\/td><td>3<\/td><td>4<\/td><td>5<\/td><td>6<\/td><td>11<\/td><td>4<\/td><td>6<\/td><td>$N=?$<\/td><\/tr><\/table> <br\/> S\u1ed1 c\u00e1c \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0: ","select":["A. $40$","B. $45$","C. $50$","D. $52$"],"hint":"S\u1ed1 c\u00e1c \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0 t\u1ed5ng c\u00e1c t\u1ea7n s\u1ed1 c\u1ee7a d\u1ea5u hi\u1ec7u","explain":"<span class='basic_left'> S\u1ed1 c\u00e1c \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0: <br\/> $N=1+3+4+5+6+11+4+6=40$ <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span>","column":4}]}],"id_ques":897},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"\u0110i\u1ec1u tra s\u1ed1 con trong $30$ gia \u0111\u00ecnh \u1edf m\u1ed9t khu v\u1ef1c d\u00e2n c\u01b0, ng\u01b0\u1eddi ta c\u00f3 b\u1ea3ng s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea ban \u0111\u1ea7u nh\u01b0 sau: <br\/> <table><tr><th>2<\/th><th>4<\/th><th>3<\/th><th>2<\/th><th>8<\/th><th>2<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><\/tr><tr><td>2<\/td><td>2<\/td><td>5<\/td><td>2<\/td><td>1<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><td>5<\/td><\/tr><tr><td>5<\/td><td>5<\/td><td>5<\/td><td>7<\/td><td>3<\/td><td>4<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0: ","select":["A. $20$","B. $30$","C. $25$","D. $15$"],"explain":"<span class='basic_left'> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u b\u1eb1ng v\u1edbi s\u1ed1 \u0111\u01a1n v\u1ecb \u0111i\u1ec1u tra l\u00e0 $30$. <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 B.<\/span><\/span>","column":4}]}],"id_ques":898},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"\u0110i\u1ec1u tra s\u1ed1 con trong $30$ gia \u0111\u00ecnh \u1edf m\u1ed9t khu v\u1ef1c d\u00e2n c\u01b0, ng\u01b0\u1eddi ta c\u00f3 b\u1ea3ng s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea ban \u0111\u1ea7u nh\u01b0 sau: <br\/> <table><tr><th>2<\/th><th>4<\/th><th>3<\/th><th>2<\/th><th>8<\/th><th>2<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><\/tr><tr><td>2<\/td><td>2<\/td><td>5<\/td><td>2<\/td><td>1<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><td>5<\/td><\/tr><tr><td>5<\/td><td>5<\/td><td>5<\/td><td>7<\/td><td>3<\/td><td>4<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0: ","select":["A. $20$","B. $8$","C. $30$","D. $7$"],"explain":"<span class='basic_left'> C\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u00f3 trong b\u1ea3ng l\u00e0: $1;2;3;4;5;7;8$ <br\/> Do \u0111\u00f3 c\u00f3 $7$ gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u.<br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 D.<\/span><\/span>","column":4}]}],"id_ques":899},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["1"],["13"],["5"],["3"],["6"],["1"],["1"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"\u0110i\u1ec1u tra s\u1ed1 con trong $30$ gia \u0111\u00ecnh \u1edf m\u1ed9t khu v\u1ef1c d\u00e2n c\u01b0, ng\u01b0\u1eddi ta c\u00f3 b\u1ea3ng s\u1ed1 li\u1ec7u th\u1ed1ng k\u00ea ban \u0111\u1ea7u nh\u01b0 sau: <br\/> <table><tr><th>2<\/th><th>4<\/th><th>3<\/th><th>2<\/th><th>8<\/th><th>2<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><\/tr><tr><td>2<\/td><td>2<\/td><td>5<\/td><td>2<\/td><td>1<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><td>5<\/td><\/tr><tr><td>5<\/td><td>5<\/td><td>5<\/td><td>7<\/td><td>3<\/td><td>4<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>3<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 3: <\/b> \u0110i\u1ec1n v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng trong b\u1ea3ng ''t\u1ea7n s\u1ed1'' sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>7<\/th><th>8<\/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>_input_<\/td><td>_input_<\/td><td>$N=30$<\/td><\/tr><\/table>","explain":"<span class='basic_left'> Ta c\u00f3 b\u1ea3ng ''t\u1ea7n s\u1ed1'' d\u1ef1a theo b\u1ea3ng th\u1ed1ng k\u00ea ban \u0111\u1ea7u nh\u01b0 sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>7<\/th><th>8<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>1<\/td><td>13<\/td><td>5<\/td><td>3<\/td><td>6<\/td><td>1<\/td><td>1<\/td><td>$N=30$<\/td><\/tr><\/table> <br\/><span class='basic_pink'>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0: $1 ;13;5;3;6;1;1$<\/span> <\/span>"}]}],"id_ques":900},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"\u0110i\u1ec1u tra v\u1ec1 s\u1ef1 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng (t\u00ednh theo kw\/h) c\u1ee7a $20$ gia \u0111\u00ecnh \u1edf m\u1ed9t t\u1ed5 d\u00e2n ph\u1ed1, ta c\u00f3 k\u1ebft qu\u1ea3 sau: <br\/> <table><tr><th>165<\/th><th>85<\/th><th>65<\/th><th>70<\/th><th>50<\/th><th>45<\/th><th>100<\/th><th>45<\/th><th>100<\/th><th>65<\/th><\/tr><tr><td>100<\/td><td>100<\/td><td>100<\/td><td>90<\/td><td>53<\/td><td>70<\/td><td>140<\/td><td>41<\/td><td>50<\/td><td>150<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> D\u1ea5u hi\u1ec7u c\u1ea7n t\u00ecm hi\u1ec3u l\u00e0 s\u1ef1 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a $20$ gia \u0111\u00ecnh trong m\u1ed9t t\u1ed5 d\u00e2n ph\u1ed1. <br\/> \u0110\u00fang hay Sai?","select":["\u0110\u00fang","Sai"],"explain":"<span class='basic_left'> D\u1ea5u hi\u1ec7u c\u1ea7n t\u00ecm hi\u1ec3u l\u00e0 s\u1ef1 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a $20$ gia \u0111\u00ecnh trong m\u1ed9t t\u1ed5 d\u00e2n ph\u1ed1.<br\/> Do \u0111\u00f3 kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 \u0111\u00fang. <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 \u0110\u00fang.<\/span><\/span>","column":2}]}],"id_ques":901},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["12"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"\u0110i\u1ec1u tra v\u1ec1 s\u1ef1 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng (t\u00ednh theo kw\/h) c\u1ee7a $20$ gia \u0111\u00ecnh \u1edf m\u1ed9t t\u1ed5 d\u00e2n ph\u1ed1, ta c\u00f3 k\u1ebft qu\u1ea3 sau: <br\/> <table><tr><th>165<\/th><th>85<\/th><th>65<\/th><th>70<\/th><th>50<\/th><th>45<\/th><th>100<\/th><th>45<\/th><th>100<\/th><th>65<\/th><\/tr><tr><td>100<\/td><td>100<\/td><td>100<\/td><td>90<\/td><td>53<\/td><td>70<\/td><td>140<\/td><td>41<\/td><td>50<\/td><td>150<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0 _input_","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Li\u1ec7t k\u00ea c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u v\u00e0 t\u00ednh s\u1ed1 gi\u00e1 tr\u1ecb kh\u00e1c nhau \u0111\u00e3 li\u1ec7t k\u00ea \u0111\u00f3. <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>C\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0: $41;45; 50;53; 65; 70;85;90;100;140;150;165$ <br\/> S\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb kh\u00e1c nhau c\u1ee7a d\u1ea5u hi\u1ec7u l\u00e0 $12$<br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $12$.<\/span><\/span>"}]}],"id_ques":902},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["5"]]],"list":[{"point":5,"width":40,"content":"","type_input":"","ques":"\u0110i\u1ec1u tra v\u1ec1 s\u1ef1 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng (t\u00ednh theo kw\/h) c\u1ee7a $20$ gia \u0111\u00ecnh \u1edf m\u1ed9t t\u1ed5 d\u00e2n ph\u1ed1, ta c\u00f3 k\u1ebft qu\u1ea3 sau: <br\/> <table><tr><th>165<\/th><th>85<\/th><th>65<\/th><th>70<\/th><th>50<\/th><th>45<\/th><th>100<\/th><th>45<\/th><th>100<\/th><th>65<\/th><\/tr><tr><td>100<\/td><td>100<\/td><td>100<\/td><td>90<\/td><td>53<\/td><td>70<\/td><td>140<\/td><td>41<\/td><td>50<\/td><td>150<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 3: <\/b> T\u1ea7n s\u1ed1 c\u1ee7a gi\u00e1 tr\u1ecb $100$ l\u00e0 _input_","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>S\u1ed1 l\u1ea7n xu\u1ea5t hi\u1ec7n c\u1ee7a m\u1ed9t gi\u00e1 tr\u1ecb trong d\u00e3y gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u g\u1ecdi l\u00e0 t\u1ea7n s\u1ed1 c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u00f3. <br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Gi\u00e1 tr\u1ecb $100$ xu\u1ea5t hi\u1ec7n $5$ l\u1ea7n trong d\u00e3y gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u \u0111\u00e3 cho trong \u0111\u1ec1 b\u00e0i. <br\/> Do \u0111\u00f3 t\u1ea7n s\u1ed1 c\u1ee7a gi\u00e1 tr\u1ecb $100$ l\u00e0 $5$.<br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $5$.<\/span><\/span>"}]}],"id_ques":903},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho hai c\u00e2u","temp":"fill_the_blank","correct":[[["24"]]],"list":[{"point":5,"width":60,"content":"","type_input":"","ques":"M\u1ed9t \u0111\u01a1n v\u1ecb c\u00f4ng t\u00e1c c\u00f3 $20$ nh\u00e2n vi\u00ean. Tu\u1ed5i ngh\u1ec1 c\u1ee7a c\u00e1c nh\u00e2n vi\u00ean (t\u00ednh b\u1eb1ng n\u0103m) \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong b\u1ea3ng sau: <br\/> <table><tr><th>7<\/th><th>3<\/th><th>2<\/th><th>5<\/th><th>20<\/th><\/tr><tr><td>5<\/td><td>2<\/td><td>3<\/td><td>15<\/td><td>7<\/td><\/tr><tr><td>5<\/td><td>7<\/td><td>8<\/td><td>20<\/td><td>18<\/td><\/tr><tr><td>8<\/td><td>15<\/td><td>24<\/td><td>10<\/td><td>12<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> Tu\u1ed5i ngh\u1ec1 l\u00e2u nh\u1ea5t c\u1ee7a nh\u00e2n vi\u00ean trong \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea trong b\u1ea3ng l\u00e0 _input_ (n\u0103m)","explain":" <span class='basic_left'>D\u1ef1a v\u00e0o b\u1ea3ng s\u1ed1 li\u1ec7u \u0111\u00e3 cho th\u00ec tu\u1ed5i ngh\u1ec1 l\u00e2u nh\u1ea5t c\u1ee7a nh\u00e2n vi\u00ean trong \u0111\u01a1n v\u1ecb \u0111\u00f3 l\u00e0 $24$ (n\u0103m)<br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $24$.<\/span><\/span>"}]}],"id_ques":904},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho hai c\u00e2u","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"M\u1ed9t \u0111\u01a1n v\u1ecb c\u00f4ng t\u00e1c c\u00f3 $20$ nh\u00e2n vi\u00ean. Tu\u1ed5i ngh\u1ec1 c\u1ee7a c\u00e1c nh\u00e2n vi\u00ean (t\u00ednh b\u1eb1ng n\u0103m) \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong b\u1ea3ng sau: <br\/> <table><tr><th>7<\/th><th>3<\/th><th>2<\/th><th>5<\/th><th>20<\/th><\/tr><tr><td>5<\/td><td>2<\/td><td>3<\/td><td>15<\/td><td>7<\/td><\/tr><tr><td>5<\/td><td>7<\/td><td>8<\/td><td>20<\/td><td>18<\/td><\/tr><tr><td>8<\/td><td>15<\/td><td>24<\/td><td>10<\/td><td>12<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> C\u00f3 bao nhi\u00eau nh\u00e2n vi\u00ean trong \u0111\u01a1n v\u1ecb \u0111\u00f3 c\u00f3 tu\u1ed5i ngh\u1ec1 l\u00e0 $7$ n\u0103m?","select":["A. $1$","B. $2$","C. $3$","D. $4$"],"explain":"<span class='basic_left'> Theo b\u1ea3ng s\u1ed1 li\u1ec7u ban \u0111\u1ea7u: S\u1ed1 $7$ xu\u1ea5t hi\u1ec7n $3$ l\u1ea7n <br\/> Do \u0111\u00f3, s\u1ed1 nh\u00e2n vi\u00ean trong \u0111\u01a1n v\u1ecb \u0111\u00f3 c\u00f3 tu\u1ed5i ngh\u1ec1 $7$ n\u0103m l\u00e0 $3$ (ng\u01b0\u1eddi) <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span>","column":4}]}],"id_ques":905},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho hai c\u00e2u","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Cho b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>125<\/th><th>130<\/th><th>132<\/th><th>140<\/th><th>141<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>3<\/td><td>8<\/td><td>10<\/td><td>7<\/td><td>2<\/td><td>$N$<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> D\u1ef1a v\u00e0o b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d tr\u00ean cho bi\u1ebft $N$ b\u1eb1ng:","select":["A. $20$","B. $30$","C. $40$","D. $50$"],"hint":"$N$ b\u1eb1ng t\u1ed5ng t\u1ea7n s\u1ed1 c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb","explain":"<span class='basic_left'> $N$ l\u00e0 s\u1ed1 c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a d\u1ea5u hi\u1ec7u. <br\/> $N=3+8+10+7+2=30$ <br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span>","column":4}]}],"id_ques":906},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho hai c\u00e2u","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Cho b\u1ea3ng \u201ct\u1ea7n s\u1ed1\u201d sau: <br\/> <table><tr><th>Gi\u00e1 tr\u1ecb $(x)$<\/th><th>125<\/th><th>130<\/th><th>132<\/th><th>140<\/th><th>141<\/th><th><\/th><\/tr><tr><td>T\u1ea7n s\u1ed1 $(n)$<\/td><td>3<\/td><td>8<\/td><td>10<\/td><td>7<\/td><td>2<\/td><td>$N$<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> Gi\u00e1 tr\u1ecb n\u00e0o c\u00f3 t\u1ea7n s\u1ed1 l\u1edbn nh\u1ea5t?","select":["A. $132$","B. $141$","C. $10$","D. $2$"],"explain":"<span class='basic_left'> T\u1ea7n s\u1ed1 l\u1edbn nh\u1ea5t c\u00f3 trong b\u1ea3ng l\u00e0 $10$. <br\/>Gi\u00e1 tr\u1ecb c\u00f3 t\u1ea7n s\u1ed1 $10$ l\u00e0 $132$. <br\/> V\u1eady gi\u00e1 tr\u1ecb $132$ c\u00f3 t\u1ea7n s\u1ed1 l\u1edbn nh\u1ea5t.<br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span>","column":4}]}],"id_ques":907},{"time":24,"part":[{"title":"\u0110i\u1ec1n k\u1ebft qu\u1ea3 \u0111\u00fang nh\u1ea5t v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"fill_the_blank","correct":[[["5"]]],"list":[{"point":5,"width":60,"content":"","type_input":"","ques":"H\u1eb1ng ng\u00e0y b\u1ea1n An th\u1eed ghi l\u1ea1i th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111i t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng v\u00e0 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u \u0111\u00f3 trong $10$ ng\u00e0y. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c \u1edf b\u1ea3ng sau: <br\/> <table><tr><th>S\u1ed1 th\u1ee9 t\u1ef1 ng\u00e0y<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>Th\u1eddi gian (ph\u00fat)<\/td><td>21<\/td><td>18<\/td><td>17<\/td><td>20<\/td><td>19<\/td><td>18<\/td><td>19<\/td><td>20<\/td><td>18<\/td><td>19<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 1: <\/b> S\u1ed1 gi\u00e1 tr\u1ecb th\u1eddi gian kh\u00e1c nhau l\u00e0 _input_ ","explain":" <span class='basic_left'>C\u00e1c gi\u00e1 tr\u1ecb th\u1eddi gian \u0111i \u0111\u1ebfn tr\u01b0\u1eddng kh\u00e1c nhau l\u00e0: $17;18;19;20;21$ (ph\u00fat)<br\/> Do \u0111\u00f3 s\u1ed1 gi\u00e1 tr\u1ecb th\u1eddi gian kh\u00e1c nhau l\u00e0 $5$.<br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u00e0 $5$.<\/span><\/span>"}]}],"id_ques":908},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"H\u1eb1ng ng\u00e0y b\u1ea1n An th\u1eed ghi l\u1ea1i th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111i t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng v\u00e0 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u \u0111\u00f3 trong $10$ ng\u00e0y. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c \u1edf b\u1ea3ng sau: <br\/> <table><tr><th>S\u1ed1 th\u1ee9 t\u1ef1 ng\u00e0y<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>Th\u1eddi gian (ph\u00fat)<\/td><td>21<\/td><td>18<\/td><td>17<\/td><td>20<\/td><td>19<\/td><td>18<\/td><td>19<\/td><td>20<\/td><td>18<\/td><td>19<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 2: <\/b> C\u00f3 m\u1ea5y ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t nhi\u1ec1u th\u1eddi gian nh\u1ea5t (theo th\u1ed1ng k\u00ea trong b\u1ea3ng)?","select":["A. $1$","B. $2$","C. $3$","D. $4$"],"explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Nh\u00ecn v\u00e0o b\u1ea3ng th\u1ed1ng k\u00ea ban \u0111\u1ea7u, t\u00ecm th\u1eddi gian l\u00e2u nh\u1ea5t m\u00e0 b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng. <br\/> Li\u1ec7t k\u00ea xem c\u00f3 bao nhi\u00eau ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t th\u1eddi gian nh\u01b0 v\u1eady.<br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Th\u1eddi gian l\u00e2u nh\u1ea5t m\u00e0 b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng l\u00e0 $21$ (ph\u00fat) <br\/> Ch\u1ec9 c\u00f3 ng\u00e0y th\u1ee9 $1$ b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t $21$ ph\u00fat. <br\/> Do \u0111\u00f3 c\u00f3 $1$ ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t th\u1eddi gian l\u00e2u nh\u1ea5t.<br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 A.<\/span><\/span>","column":4}]}],"id_ques":909},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"\u0110\u1ec1 chung cho ba c\u00e2u","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"H\u1eb1ng ng\u00e0y b\u1ea1n An th\u1eed ghi l\u1ea1i th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111i t\u1eeb nh\u00e0 \u0111\u1ebfn tr\u01b0\u1eddng v\u00e0 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u \u0111\u00f3 trong $10$ ng\u00e0y. K\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c \u1edf b\u1ea3ng sau: <br\/> <table><tr><th>S\u1ed1 th\u1ee9 t\u1ef1 ng\u00e0y<\/th><th>1<\/th><th>2<\/th><th>3<\/th><th>4<\/th><th>5<\/th><th>6<\/th><th>7<\/th><th>8<\/th><th>9<\/th><th>10<\/th><\/tr><tr><td>Th\u1eddi gian (ph\u00fat)<\/td><td>21<\/td><td>18<\/td><td>17<\/td><td>20<\/td><td>19<\/td><td>18<\/td><td>19<\/td><td>20<\/td><td>18<\/td><td>19<\/td><\/tr><\/table> <br\/> <b> C\u00e2u 3: <\/b> C\u00f3 m\u1ea5y ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t $19$ ph\u00fat (theo th\u1ed1ng k\u00ea trong b\u1ea3ng)?","select":["A. $1$","B. $2$","C. $3$","D. $4$"],"explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Nh\u00ecn v\u00e0o b\u1ea3ng th\u1ed1ng k\u00ea ban \u0111\u1ea7u, li\u1ec7t k\u00ea xem c\u00f3 bao nhi\u00eau ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t $19$ ph\u00fat.<br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ng\u00e0y th\u1ee9 $5$; ng\u00e0y th\u1ee9 $7$ v\u00e0 ng\u00e0y th\u1ee9 $10$ l\u00e0 b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t $19$ ph\u00fat. <br\/> Do \u0111\u00f3 c\u00f3 $3$ ng\u00e0y b\u1ea1n An \u0111i t\u1eeb nh\u00e0 t\u1edbi tr\u01b0\u1eddng m\u1ea5t $19$ ph\u00fat.<br\/><span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n l\u00e0 C.<\/span><\/span>","column":4}]}],"id_ques":910}],"lesson":{"save":0,"level":1}}