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{"segment":[{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["5"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/13.jpg' \/><\/center> <br\/> Lan v\u00e0 Hu\u1ec7 m\u1ed7i ng\u01b0\u1eddi mua m\u1ed9t s\u1ed1 b\u00fat ch\u00ec m\u00e0u. Trong m\u1ed7i h\u1ed9p \u0111\u1ec1u c\u00f3 t\u1eeb hai b\u00fat ch\u00ec tr\u1edf l\u00ean v\u00e0 s\u1ed1 b\u00fat \u1edf c\u00e1c h\u1ed9p \u0111\u1ec1u b\u1eb1ng nhau. T\u00ednh ra Lan mua 20 b\u00fat, Hu\u1ec7 mua 15 b\u00fat. H\u1ecfi m\u1ed7i h\u1ed9p b\u00fat ch\u00ec m\u00e0u c\u00f3 bao nhi\u00eau chi\u1ebfc? <br\/> \u0110\u00e1p \u00e1n l\u00e0: _input_ chi\u1ebfc b\u00fat ch\u00ec m\u00e0u ","hint":"s\u1ed1 b\u00fat \u1edf m\u1ed7i h\u1ed9p l\u00e0 \u01b0\u1edbc c\u1ee7a 15 v\u00e0 l\u00e0 \u01b0\u1edbc c\u1ee7a 20","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> N\u1ebfu s\u1ed1 b\u00fat \u1edf m\u1ed7i h\u1ed9p l\u00e0 a chi\u1ebfc <br\/> Ta c\u00f3: 20 $\\vdots$ a v\u00e0 15 $\\vdots$ a <br\/> <b> B\u01b0\u1edbc 2: <\/b> V\u00ec 20 $\\vdots$ a v\u00e0 15 $\\vdots$ a n\u00ean s\u1ed1 b\u00fat ch\u00ec \u1edf m\u1ed7i h\u1ed9p l\u00e0 \u01afC(15; 20) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>G\u1ecdi s\u1ed1 b\u00fat ch\u00ec \u1edf m\u1ed7i h\u1ed9p l\u00e0 a chi\u1ebfc $(a \\geq 2 )$ <br\/> V\u00e0 s\u1ed1 b\u00fat ch\u00ec m\u00e0u trong m\u1ed7i h\u1ed9p l\u00e0 nh\u01b0 nhau <br\/> V\u00ec Lan mua 20 b\u00fat ch\u00ec n\u00ean 20 $\\vdots$ a <br\/> Hu\u1ec7 mua 15 b\u00fat ch\u00ec n\u00ean: 15 $\\vdots$ a <br\/> S\u1ed1 b\u00fat ch\u00ec \u1edf m\u1ed7i h\u1ed9p l\u00e0 \u01b0\u1edbc chung c\u1ee7a 15 v\u00e0 20 <br\/> 15 c\u00f3 c\u00e1c \u01b0\u1edbc l\u00e0: 1; 15; 3; 5 <br\/> 20 c\u00f3 c\u00e1c \u01b0\u1edbc l\u00e0: 1; 2; 4; 5; 10; 20 <br\/> \u01afC(15; 20) = {1; 5} $\\Rightarrow$ a = 5 (v\u00ec $a \\geq 2$) <br\/> V\u1eady s\u1ed1 b\u00fat ch\u00ec \u1edf m\u1ed7i h\u1ed9p l\u00e0 5 chi\u1ebfc b\u00fat ch\u00ec m\u00e0u <br\/> <span class='basic_pink'> S\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 5 <\/span> "}]}],"id_ques":701},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["890"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/9.jpg' \/><\/center> <br\/> C\u00f3 m\u1ed9t s\u1ed1 cu\u1ed1n s\u00e1ch gi\u00e1o khoa. N\u1ebfu x\u1ebfp th\u00e0nh t\u1eebng ch\u1ed3ng 10 cu\u1ed1n th\u00ec v\u1eeba h\u1ebft, x\u1ebfp th\u00e0nh t\u1eebng ch\u1ed3ng 12 cu\u1ed1n th\u00ec th\u1eeba 2 cu\u1ed1n, x\u1ebfp th\u00e0nh t\u1eebng ch\u1ed3ng 18 cu\u1ed1n th\u00ec th\u1eeba 8 cu\u1ed1n. H\u00e3y t\u00ecm s\u1ed1 s\u00e1ch \u0111\u00f3 bi\u1ebft s\u1ed1 s\u00e1ch trong kho\u1ea3ng t\u1eeb 715 \u0111\u1ebfn 1000 cu\u1ed1n. <br\/> \u0110\u00e1p \u00e1n l\u00e0: _input_ cu\u1ed1n s\u00e1ch ","hint":"S\u1ed1 s\u00e1ch c\u1ea7n t\u00ecm l\u00e0 b\u1ed9i c\u1ee7a 10, n\u1ebfu b\u1edbt \u0111i 2 th\u00ec l\u00e0 b\u1ed9i c\u1ee7a 12 v\u00e0 n\u1ebfu b\u1edbt \u0111i 8 th\u00ec l\u00e0 b\u1ed9i c\u1ee7a 18","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> G\u1ecdi s\u1ed1 s\u00e1ch l\u00e0 a (715 < a < 1000) <br\/> Ta c\u00f3: a $\\vdots$ 10; (a - 2) $\\vdots$ 12 v\u00e0 (a - 8) $\\vdots$ 18 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ta \u0111i t\u00ecm s\u1ed1 a \u0111\u1ed3ng th\u1eddi th\u1ecfa m\u00e3n c\u00e1c \u0111i\u1ec1u ki\u1ec7n tr\u00ean <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 s\u00e1ch c\u1ea7n t\u00ecm l\u00e0 a (715 < a < 1000) <br\/> V\u00ec n\u1ebfu x\u1ebfp th\u00e0nh t\u1eebng ch\u1ed3ng 10 cu\u1ed1n th\u00ec v\u1eeba h\u1ebft n\u00ean a $\\vdots$ 10 (1) <br\/> X\u1ebfp t\u1eebng ch\u1ed3ng 12 cu\u1ed1n th\u00ec th\u1eeba 2 cu\u1ed1n n\u00ean (a - 2) $\\vdots$ 12 <br\/> $\\Rightarrow$ (a + 10) $\\vdots$ 12 (2) <br\/> X\u1ebfp t\u1eebng ch\u1ed3ng 18 cu\u1ed1n th\u00ec th\u1eeba 8 cu\u1ed1n n\u00ean (a - 8) $\\vdots$ 18 <br\/> $\\Rightarrow$ (a + 10) $\\vdots$ 18 (3) <br\/> T\u1eeb (1), (2), (3) $\\Rightarrow$ (a + 10) $\\in$ BC(10, 12, 18) <br\/> BC(10, 12, 18) = {180; 360; 540; 720; 900;...} <br\/> V\u00ec s\u1ed1 s\u00e1ch trong kho\u1ea3ng t\u1eeb 715 \u0111\u1ebfn 1000 cu\u1ed1n n\u00ean a + 10 = 900 $\\Rightarrow$ a = 890 <br\/> V\u1eady s\u1ed1 s\u00e1ch c\u1ea7n t\u00ecm l\u00e0 890 cu\u1ed1n s\u00e1ch<br\/> <span class='basic_pink'> S\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 890 <\/span> "}]}],"id_ques":702},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank_random","correct":[[["1"],["2"],["3"],["6"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/4.jpg' \/><\/center> <br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean n bi\u1ebft (n + 6) $\\vdots$ n <br\/> \u0110\u00e1p \u00e1n l\u00e0: n $\\in$ {_input_; _input_; _input_: _input_} ","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: V\u00ec n $\\vdots$ n <br\/> N\u00ean \u0111\u1ec3 (n + 6) $\\vdots$ n $\\Rightarrow$ 6 $\\vdots$ n <br\/> $\\Rightarrow$ n $\\in$ \u01af(6) = {1; 2; 3; 6} <br\/> <span class='basic_pink'> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1; 2; 3; 6 <\/span> "}]}],"id_ques":703},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["5"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/10.jpg' \/><\/center> <br\/> T\u00ecm x bi\u1ebft 125 $\\vdots$ x; 100 $\\vdots$ x v\u00e0 150 $\\vdots$ x v\u00e0 (1 < x < 10) <br\/> \u0110\u00e1p \u00e1n l\u00e0: x = _input_","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> Ta c\u00f3: V\u00ec 125 $\\vdots$ x; 100 $\\vdots$ x v\u00e0 150 $\\vdots$ x <br\/> x $\\in$ \u01afC(125; 100; 150) (1 < x < 10) <br\/> \u01af(125) = {1; 5; 25; 125} <br\/> \u01af(100) = {1; 2; 4; 5; 20; 25; 50; 100; 10} <br\/> \u01af(150) = {1; 2; 3; 5; 10; 15; 30; 50; 75; 150; 6; 25} <br\/> \u01afC(100; 125; 150) = {1; 5; 25} <br\/> V\u00ec 1 < x < 10 n\u00ean x = 5 <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 5 <\/span> "}]}],"id_ques":704},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1267"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/7.jpg' \/><\/center> <br\/> M\u1ed9t s\u1ed1 chia 4 d\u01b0 3, chia 17 d\u01b0 9; chia 19 d\u01b0 13. H\u1ecfi s\u1ed1 \u0111\u00f3 chia 1292 d\u01b0 bao nhi\u00eau? <br\/> D\u01b0 l\u00e0: _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 A, theo b\u00e0i ra ta c\u00f3: <br\/> (A - 3) $\\vdots$ 4; (A - 9) $\\vdots$ 17; (A - 13) $\\vdots$ 19 <br\/> Ta t\u00ecm s\u1ed1 x sao cho (A + x) $\\vdots$ 4; (A + x) $\\vdots$ 17 v\u00e0 (A + x) $\\vdots$ 19 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Bi\u1ebfn \u0111\u1ed5i A v\u1ec1 d\u1ea1ng A = 1292 . k + m (k, m $\\in \\mathbb{N}$) <br\/> Khi \u0111\u00f3 m ch\u00ednh l\u00e0 s\u1ed1 d\u01b0 khi chia A cho 1292<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> G\u1ecdi s\u1ed1 c\u1ea7n t\u00ecm l\u00e0 A <br\/> V\u00ec s\u1ed1 A chia 4 d\u01b0 3 n\u00ean: A = 4.a + 3 (1) (a $\\in \\mathbb{N}$) <br\/> A chia 17 d\u01b0 9 n\u00ean: A = 17 . b + 9 (2) ($a \\in \\mathbb{N}$) <br\/> A chia 19 d\u01b0 13 n\u00ean: A = 19 . c + 13 (3) (c $\\in \\mathbb{N}$) <br\/> T\u1eeb (1), (2), (3) $\\Rightarrow$ (A + 25) $\\vdots$ 4; (A + 25) $\\vdots$ 17; (A + 25) $\\vdots$ 19 <br\/> $\\Rightarrow$ (A + 25) $\\in$ BC(4; 17; 19) <br\/> V\u00ec 4; 17; 19 l\u00e0 3 s\u1ed1 \u0111\u00f4i m\u1ed9t nguy\u00ean t\u1ed1 c\u00f9ng nhau n\u00ean A + 25 $\\vdots$ 4 . 17 . 19 = 1292 <br\/> V\u1eady A + 25 = 1292 . k (k = 1, 2, 3,...) <br\/> $\\Rightarrow$ A = 1292.k - 25 <br\/> A = 1292 . (k - 1) + 1292 - 25 <br\/> A = 1292 . (k - 1) + 1267 <br\/> V\u1eady s\u1ed1 A chia 1292 d\u01b0 1267 <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 1267 <\/span> "}]}],"id_ques":705},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["34"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/11.jpg' \/><\/center> <br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean a bi\u1ebft 190 chia a d\u01b0 20, 250 chia a d\u01b0 12 <br\/> V\u1eady a = _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> V\u00ec 190 chia a d\u01b0 20 $\\Rightarrow$ (190 - 20) $\\vdots$ a v\u00e0 a > 20 <br\/> 250 chia a d\u01b0 12 $\\Rightarrow$ (250 - 12) $\\vdots$ a v\u00e0 (a > 12) <br\/> $\\Rightarrow$ a $\\in$ \u01afC((190 - 20); (250 - 12)), (a > 20)<br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ecm a $\\in$ BC((190 - 20); (250 - 12)) v\u00e0 th\u1ecfa m\u00e3n \u0111i\u1ec1u ki\u1ec7n tr\u00ean <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> V\u00ec 190 chia a d\u01b0 20 n\u00ean 190 - 20 = 170 $\\vdots$ a (a > 20) (1) <br\/> 250 chia a d\u01b0 12 n\u00ean 250 - 12 = 238 $\\vdots$ a (a > 12) (2) <br\/> T\u1eeb (1) v\u00e0 (2) $\\Rightarrow$ a $\\in$ \u01afC(170; 238) (a > 20) <br\/> \u01af(170) = {1; 2; 5; 10; 17; 34; 85; 170} <br\/> \u01af(238) = {1; 2; 7; 14; 17; 34; 119; 238} <br\/> \u01afC(170; 238) = {1; 2; 17; 34} <br\/> V\u00ec a $\\in$ \u01afC(170; 238) v\u00e0 a > 20 $\\Rightarrow$ a = 34 <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 34 <\/span> "}]}],"id_ques":706},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Hai anh Tu\u1ea5n v\u00e0 T\u00fa \u1edf c\u00f9ng m\u1ed9t nh\u00e0 v\u00e0 l\u00e0m vi\u1ec7c \u1edf hai c\u00f4ng ty kh\u00e1c nhau. Anh Tu\u1ea5n 10 ng\u00e0y l\u1ea1i tr\u1ef1c m\u1ed9t l\u1ea7n, anh T\u00fa c\u1ee9 15 ng\u00e0y l\u1ea1i tr\u1ef1c m\u1ed9t l\u1ea7n. Hai ng\u01b0\u1eddi c\u00f9ng tr\u1ef1c v\u00e0o ch\u1ee7 nh\u1eadt ng\u00e0y 1 - 1 - 2012. H\u1ecfi trong n\u0103m 2012 hai anh c\u00f9ng tr\u1ef1c ng\u00e0y ch\u1ee7 nh\u1eadt m\u1ea5y l\u1ea7n?","select":["A. 1 l\u1ea7n","B. 2 l\u1ea7n ","C. 3 l\u1ea7n","D. 4 l\u1ea7n"],"hint":"\u0110\u1ec3 2 ng\u01b0\u1eddi c\u00f9ng tr\u1ef1c v\u00e0o ch\u1ee7 nh\u1eadt th\u00ec s\u1ed1 ng\u00e0y ph\u1ea3i chia h\u1ebft cho 10; 15 v\u00e0 chia h\u1ebft cho 7","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ecm s\u1ed1 ng\u00e0y \u0111\u1ec3 hai anh l\u1ea1i c\u00f9ng tr\u1ef1c c\u00e1c l\u1ea7n ti\u1ebfp theo <br\/> \u0110\u1ec3 hai anh l\u1ea1i tr\u1ef1c c\u00f9ng nhau th\u00ec s\u1ed1 ng\u00e0y thu\u1ed9c BC(10; 15) <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ecm s\u1ed1 ng\u00e0y \u0111\u1ec3 hai anh c\u00f9ng tr\u1ef1c v\u00e0o ch\u1ee7 nh\u1eadt <br\/> \u0110\u1ec3 2 anh c\u00f9ng tr\u1ef1c v\u00e0o ng\u00e0y ch\u1ee7 nh\u1eadt th\u00ec s\u1ed1 ng\u00e0y 2 anh c\u00f9ng \u0111i tr\u1ef1c \u0111\u00f3 ph\u1ea3i l\u00e0 s\u1ed1 chia h\u1ebft cho 7 <br\/> (v\u00ec l\u1ea7n \u0111\u1ea7u 2 anh c\u00f9ng tr\u1ef1c v\u00e0o ch\u1ee7 nh\u1eadt, sau 7 ng\u00e0y th\u00ec l\u1ea1i \u0111\u1ebfn ch\u1ee7 nh\u1eadt) <\/b> <br\/> <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi s\u1ed1 ng\u00e0y \u0111\u1ec3 2 anh l\u1ea1i c\u00f9ng \u0111i tr\u1ef1c l\u00e0 x (x > 15) <br\/> V\u00ec anh Tu\u1ea5n 10 ng\u00e0y tr\u1ef1c 1 l\u1ea7n n\u00ean x $\\vdots$ 10 <br\/> V\u00ec anh T\u00fa 15 ng\u00e0y tr\u1ef1c 1 l\u1ea7n n\u00ean x $\\vdots$ 15 <br\/> N\u00ean \u0111\u1ec3 2 anh l\u1ea1i c\u00f9ng \u0111i tr\u1ef1c m\u1ed9t ng\u00e0y th\u00ec x $\\in$ BC(10; 15) <br\/> \u0110\u1ec3 2 anh c\u00f9ng ph\u1ea3i tr\u1ef1c ng\u00e0y ch\u1ee7 nh\u1eadt th\u00ec x $\\vdots$ 7 <br\/>(V\u00ec 2 anh c\u00f9ng tr\u1ef1c l\u1ea7n \u0111\u1ea7u v\u00e0o ch\u1ee7 nh\u1eadt, sau 7 ng\u00e0y th\u00ec l\u1eb7p l\u1ea1i m\u1ed9t ng\u00e0y ch\u1ee7 nh\u1eadt) <br\/> V\u1eady s\u1ed1 ng\u00e0y \u0111\u1ec3 2 anh c\u00f9ng tr\u1ef1c v\u00e0o ch\u1ee7 nh\u1eadt l\u00e0 BC(10; 15; 7) = {210; 420; 630;...} <br\/> V\u00ec 1 n\u0103m c\u00f3 365 ng\u00e0y n\u00ean trong n\u0103m 2012 hai anh c\u00f9ng tr\u1ef1c ng\u00e0y ch\u1ee7 nh\u1eadt 2 l\u1ea7n <br\/> L\u1ea7n 1 l\u00e0 ng\u00e0y 1 - 1 - 2012, l\u1ea7n 2 l\u00e0 210 ng\u00e0y sau \u0111\u00f3 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. 2 l\u1ea7n <\/span> ","column":2}]}],"id_ques":707},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t <br\/> <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/10.jpg' \/><\/center> ","select":["A. $8 \\in \u01afC(356; 472; 816)$","B. $59 \\in \u01afC(356; 472; 816)$ ","C. $89 \\in \u01afC(356; 472; 816)$","D. $4 \\in \u01afC(356; 472; 816)$"],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ph\u01b0\u01a1ng ph\u00e1p chung \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 a s\u1ed1 c\u00f3 thu\u1ed9c t\u1eadp h\u1ee3p \u01afC(m, n, p) hay kh\u00f4ng <br\/> Ta c\u1ea7n ch\u1ec9 ra a l\u00e0 \u01b0\u1edbc c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 \u0111\u00f3 hay m $\\vdots$ a; n $\\vdots$ a v\u00e0 p $\\vdots$ a <br\/> N\u1ebfu a kh\u00f4ng l\u00e0 \u01b0\u1edbc c\u1ee7a \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec a kh\u00f4ng thu\u1ed9c t\u1eadp \u01b0\u1edbc chung <br\/> Hay c\u00f3 \u00edt nh\u1ea5t m\u1ed9t s\u1ed1 m ho\u1eb7c n ho\u1eb7c p kh\u00f4ng chia h\u1ebft cho a th\u00ec a $\\notin$ \u01afC(m, n, p) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> A - V\u00ec 356 $\\not \\vdots$ 8 $\\Rightarrow$ 8 $\\notin$ \u01af(356) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $8 \\in \u01afC(356; 472; 816)$ \" l\u00e0 <b> SAI <\/b> <br\/> B - V\u00ec 356 $\\not \\vdots$ 59 $\\Rightarrow$ 59 $\\notin$ \u01af(356) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $59 \\in \u01afC(356; 472; 816)$ \" l\u00e0 <b> SAI <\/b> <br\/> C - V\u00ec 472 $\\not \\vdots$ 89 $\\Rightarrow$ 89 $\\notin$ \u01af(472) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $89 \\in \u01afC(356; 472; 816)$ \" l\u00e0 <b> SAI <\/b> <br\/> D - V\u00ec 356 $\\vdots$ 4; 472 $\\vdots$ 4 v\u00e0 816 $\\vdots$ 4 $\\Rightarrow$ 4 $\\in$ \u01af(356); 4 $\\in$ \u01af(472); 4 $\\in$ \u01af(816) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $4 \\in \u01afC(356; 472; 816)$ \" l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D <\/span> ","column":2}]}],"id_ques":708},{"time":24,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t <br\/> <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai14/lv3/img\/2.jpg' \/><\/center> ","select":["A. $2880 \\in BC(180; 120; 320)$","B. $780 \\in BC(180; 120; 320)$ ","C. $600 \\in BC(180; 120; 320)$","D. $640 \\in BC(180; 120; 320)$"],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ph\u01b0\u01a1ng ph\u00e1p chung \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t s\u1ed1 a s\u1ed1 c\u00f3 thu\u1ed9c t\u1eadp h\u1ee3p BC(m, n, p) hay kh\u00f4ng <br\/> Ta c\u1ea7n ch\u1ec9 ra a l\u00e0 b\u1ed9i c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 \u0111\u00f3 hay a $\\vdots$ m; a $\\vdots$ n v\u00e0 a $\\vdots$ p <br\/> N\u1ebfu a kh\u00f4ng l\u00e0 b\u1ed9i c\u1ee7a \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec a kh\u00f4ng thu\u1ed9c t\u1eadp b\u1ed9i chung <br\/> Hay c\u00f3 \u00edt nh\u1ea5t m\u1ed9t s\u1ed1 m ho\u1eb7c n ho\u1eb7c p l\u00e0 \u01b0\u1edbc c\u1ee7a a th\u00ec a $\\notin$ BC(m, n, p) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> A - V\u00ec 2880 $\\vdots$ 180; 2880 $\\vdots$ 120 v\u00e0 2880 $\\vdots$ 320 $\\Rightarrow$ 2880 $\\in$ B(180); 2880 $\\in$ B(120) v\u00e0 2880 $\\in$ B(320) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $2880 \\in BC(180; 120; 320)$ \" l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> B - V\u00ec 780 $\\not \\vdots$ 120 $\\Rightarrow$ 780 $\\notin$ B(120) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $780 \\in BC(180; 120; 320)$ \" l\u00e0 <b> SAI <\/b> <br\/> C - V\u00ec 600 $\\not \\vdots$ 180 $\\Rightarrow$ 600 $\\notin$ B(180) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $180 \\in BC(180; 120; 320)$ \" l\u00e0 <b> SAI <\/b> <br\/> D - V\u00ec 640 $\\not \\vdots$ 180 $\\Rightarrow$ 640 $\\notin$ B(180) <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" $640 \\in BC(180; 120; 320)$ \" l\u00e0 <b> SAI <\/b> <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 : A <\/span> ","column":2}]}],"id_ques":709},{"time":24,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank_random","correct":[[["2"],["5"],["10"],["25"],["50"]]],"list":[{"point":10,"width":60,"content":"","type_input":"","ques":" Cho A l\u00e0 t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 c\u00e1c s\u1ed1 nguy\u00ean t\u1ed1 <br\/> B l\u00e0 t\u1eadp h\u1ee3p c\u00e1c h\u1ee3p s\u1ed1 <br\/> M l\u00e0 t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc c\u1ee7a 20 <br\/> N l\u00e0 t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc c\u1ee7a 50 <br\/> $A \\cap M$ = _input_; _input_ <br\/> $B \\cap N$ = _input_; _input_; _input_","hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft t\u1eadp h\u1ee3p M v\u00e0 t\u1eadp h\u1ee3p N <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ecm c\u00e1c ph\u1ea7n t\u1eed gi\u1ed1ng nhau \u1edf t\u1eadp h\u1ee3p A v\u00e0 t\u1eadp h\u1ee3p M <br\/> T\u00ecm c\u00e1c ph\u1ea7n t\u1eed gi\u1ed1ng nhau \u1edf t\u1eadp h\u1ee3p B v\u00e0 t\u1eadp h\u1ee3p N <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> T\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc c\u1ee7a 20 l\u00e0:<br\/> M = \u01af(20) = {1; 2; 4; 5; 10; 20} <br\/> T\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc c\u1ee7a 50 l\u00e0: <br\/> N = \u01af(50) = {1; 2; 5; 10; 25; 50} <br\/> $A \\cap M$ = {2; 5} <br\/> (V\u00ec trong t\u1eadp M ch\u1ec9 c\u00f3 2 v\u00e0 5 l\u00e0 s\u1ed1 nguy\u00ean t\u1ed1) <br\/> $B \\cap N$ = {10; 25; 50} <br\/> (V\u00ec trong t\u1eadp N c\u00f3 10; 25; 50 l\u00e0 h\u1ee3p s\u1ed1) <br\/> <span class='basic_pink'> V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 2; 5; 10; 25; 50 <\/span> "}]}],"id_ques":710}],"lesson":{"save":0,"level":3}}

Điểm của bạn.

Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên + 5 điểm
Trong khoảng 1 phút -> 2 phút + 4 điểm
Trong khoảng 2 phút -> 3 phút + 3 điểm
Trong khoảng 3 phút -> 4 phút + 2 điểm
Trong khoảng 4 phút -> 5 phút + 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

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Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý