{"segment":[{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/1.png' \/><\/center> <br\/> B\u1ed9i chung nh\u1ecf nh\u1ea5t c\u1ee7a hai hay nhi\u1ec1u s\u1ed1 l\u00e0 s\u1ed1 nh\u1ecf nh\u1ea5t trong t\u1eadp b\u1ed9i chung c\u1ee7a c\u00e1c s\u1ed1 \u0111\u00f3. <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> B\u1ed9i chung nh\u1ecf nh\u1ea5t c\u1ee7a hai hay nhi\u1ec1u s\u1ed1 l\u00e0 s\u1ed1 nh\u1ecf nh\u1ea5t <b> kh\u00e1c 0 <\/b> trong t\u1eadp h\u1ee3p b\u1ed9i chung c\u1ee7a c\u00e1c s\u1ed1 \u0111\u00f3. <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 <b> SAI <\/b> ","column":2}]}],"id_ques":751},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/1.png' \/><\/center> <br\/>B\u1ed9i chung nh\u1ecf nh\u1ea5t c\u1ee7a s\u1ed1 t\u1ef1 nhi\u00ean a b\u1ea5t k\u00ec v\u00e0 1 l\u00e0 1. <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> B\u1ed9i chung nh\u1ecf nh\u1ea5t c\u1ee7a s\u1ed1 t\u1ef1 nhi\u00ean a b\u1ea5t k\u00ec v\u00e0 1 l\u00e0 a <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 <b> SAI <\/b> ","column":2}]}],"id_ques":752},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/10.jpg' \/><\/center> <br\/> BCNN(30; 45) = ?","select":["A. 45 ","B. 50 ","C. 60","D. 90"],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(30; 45) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> PH\u01af\u01a0NG PH\u00c1P CHUNG T\u00ccM BCNN <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch m\u1ed7i s\u1ed1 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3. <br\/> T\u00edch \u0111\u00f3 l\u00e0 BCNN ph\u1ea3i t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 30; 45 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> Ta c\u00f3 $30 = 2 . 3 . 5$ ; $45 = 3^2 . 5$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang l\u00e0 2; 3; 5 <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 v\u1eeba ch\u1ecdn m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> BCNN(30; 45) = $2 . 3^2 . 5 = 90$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D. 90<\/span>","column":2}]}],"id_ques":753},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/10.jpg' \/><\/center> <br\/> BCNN(84; 120) = ?","select":["A. 420 ","B. 840 ","C. 640","D. 1020"],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(84; 120) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> PH\u01af\u01a0NG PH\u00c1P CHUNG T\u00ccM BCNN <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch m\u1ed7i s\u1ed1 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3. <br\/> T\u00edch \u0111\u00f3 l\u00e0 BCNN ph\u1ea3i t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 84; 120 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> Ta c\u00f3 $84 = 2^2 . 3 . 7$ ; $120 = 2^3 . 3 . 5$ <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang l\u00e0 2; 3; 5 v\u00e0 7<br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 v\u1eeba ch\u1ecdn m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> BCNN(84; 120) = $2^3 . 3 . 5 . 7 = 840$ <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. 840<\/span>","column":2}]}],"id_ques":754},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/10.jpg' \/><\/center> <br\/> BCNN(4; 7; 15) = ?","select":["A. 60 ","B. 28 ","C. 420","D. 210"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta th\u1ea5y (4; 7) = 1; (7; 15) = 1; (4; 15) = 1 <br\/> $\\Rightarrow$ BCNN(4; 7; 15) = 4 . 7 . 15 = 420 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. 420<\/span> <br\/> <span class='basic_green'> <i> L\u01b0u \u00fd: N\u1ebfu c\u00e1c s\u1ed1 \u0111\u00e3 cho \u0111\u00f4i m\u1ed9t nguy\u00ean t\u1ed1 c\u00f9ng nhau th\u00ec BCNN c\u1ee7a ch\u00fang ch\u00ednh l\u00e0 t\u00edch c\u1ee7a c\u00e1c s\u1ed1 \u0111\u00f3 <\/i> <\/span> ","column":2}]}],"id_ques":755},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/9.jpg' \/><\/center> <br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean a nh\u1ecf nh\u1ea5t bi\u1ebft a $\\vdots$ 50; a $\\vdots$ 35","select":["A. a = 125 ","B. a = 350","C. a = 70","D. a = 175"],"hint":"S\u1ed1 t\u1ef1 nhi\u00ean a c\u1ea7n t\u00ecm ch\u00ednh l\u00e0 BCNN(50; 35)","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec a nh\u1ecf nh\u1ea5t v\u00e0 a $\\vdots$ 50; a $\\vdots$ 35 <br\/> $\\Rightarrow$ a = BCNN(50; 35) <br\/> Ta c\u00f3: $50 = 2 . 5^2$ ; $35 = 5 . 7$ <br\/> $\\Rightarrow$ a = BCNN(50; 35) = $2 . 5^2 . 7 = 350$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. a = 350<\/span> ","column":2}]}],"id_ques":756},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/9.jpg' \/><\/center> <br\/> T\u00ecm s\u1ed1 t\u1ef1 nhi\u00ean a nh\u1ecf nh\u1ea5t bi\u1ebft a $\\vdots$ 60; a $\\vdots$ 48","select":["A. a = 120 ","B. a = 80","C. a = 240","D. a = 360"],"hint":"S\u1ed1 t\u1ef1 nhi\u00ean a c\u1ea7n t\u00ecm ch\u00ednh l\u00e0 BCNN(60; 48)","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec a nh\u1ecf nh\u1ea5t v\u00e0 a $\\vdots$ 60; a $\\vdots$ 48 <br\/> $\\Rightarrow$ a = BCNN(60; 48) <br\/> Ta c\u00f3: $60 = 2^2 . 3 . 5$ ; $48 = 2^4 . 3$ <br\/> $\\Rightarrow$ a = BCNN(60; 48) = $2^4 . 3 . 5 = 240$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. a = 240<\/span> ","column":2}]}],"id_ques":757},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/11.jpg' \/><\/center> <br\/> BCNN(8; 12; 15) = 60. <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>","select":["A. \u0110\u00daNG ","B. SAI"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(8; 12; 15) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 8; 12; 15 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3. <br\/> T\u00edch \u0111\u00f3 l\u00e0 BCNN ph\u1ea3i t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $8 = 2^3$ ; $12 = 2^2 . 3$ ; $15 = 3 . 5$ <br\/> $\\Rightarrow$ BCNN(8; 12; 15) = $2^3 . 3 . 5 = 120$ <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh \" BCNN(8; 15; 12) = 60 \" l\u00e0 <b> SAI <\/b>","column":2}]}],"id_ques":758},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/11.jpg' \/><\/center> <br\/> BCNN(9; 24; 35) = 2520. <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>","select":["A. \u0110\u00daNG ","B. SAI"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(8; 12; 15) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 9; 24; 35 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3. <br\/> T\u00edch \u0111\u00f3 l\u00e0 BCNN ph\u1ea3i t\u00ecm <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $9 = 3^2$ ; $24 = 2^3 . 3$ ; $35 = 5 . 7$ <br\/> $\\Rightarrow$ BCNN(9; 24; 35) = $2^3 . 3^2 . 5 . 7 = 2520$ <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh \" BCNN(9; 24; 35) = 2520 \" l\u00e0 <b> \u0110\u00daNG <\/b>","column":2}]}],"id_ques":759},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/4.jpg' \/><\/center> <br\/> T\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 300 c\u1ee7a 24; 25 l\u00e0:","select":["A. {0} ","B. $\\varnothing$","C. {0; 300}","D. {0; 150}"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(24; 25) r\u1ed3i t\u00ecm t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 300 c\u1ee7a 24; 25 <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 24; 25 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3, t\u00edch \u0111\u00f3 l\u00e0 BCNN <br\/> <b> B\u01b0\u1edbc 4: <\/b> T\u00ecm t\u1eadp h\u1ee3p BC(24; 25) v\u00e0 nh\u1ecf h\u01a1n 300 b\u1eb1ng c\u00e1ch l\u1ea5y BCNN nh\u00e2n l\u1ea7n l\u01b0\u1ee3t v\u1edbi 0; 1; 2... <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $24 = 2^3 . 3$ ; $25 = 5^2$ <br\/> $\\Rightarrow$ BCNN(24; 25) = $2^3 . 3 . 5^2 = 600$ <br\/> $\\Rightarrow$ BC(24; 25) = {0; 600; 1200; 1800;.....} <br\/> Trong t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung \u1edf tr\u00ean ch\u1ec9 c\u00f3 0 < 300 <br\/> V\u1eady t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 300 c\u1ee7a 24; 25 l\u00e0 {0} <br\/><span class='basic_pink'> \u0110\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":2}]}],"id_ques":760},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/4.jpg' \/><\/center> <br\/> T\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 200 c\u1ee7a 9; 24 l\u00e0:","select":["A. {0; 48; 72; 144} ","B. {0; 72; 144}","C. {0; 24; 72}","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u sai"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(9; 24) r\u1ed3i t\u00ecm t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 200 c\u1ee7a 9; 24 <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch 9; 24 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3: <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 \u0111\u00e3 ch\u1ecdn, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a n\u00f3, t\u00edch \u0111\u00f3 l\u00e0 BCNN <br\/> <b> B\u01b0\u1edbc 4: <\/b> T\u00ecm t\u1eadp h\u1ee3p BC(9; 24) v\u00e0 nh\u1ecf h\u01a1n 200 b\u1eb1ng c\u00e1ch l\u1ea5y BCNN nh\u00e2n l\u1ea7n l\u01b0\u1ee3t v\u1edbi 0; 1; 2... <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: $9 = 3^2$ ; $24 = 2^3 . 3$ <br\/> $\\Rightarrow$ BCNN(9; 24) = $2^3 . 3^2 = 72$ <br\/> $\\Rightarrow$ BC(9; 24) = {0; 72; 144; 216; 288;...} <br\/> T\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung nh\u1ecf h\u01a1n 200 c\u1ee7a 9; 24 l\u00e0: {0; 72; 144} <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":761},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/2.jpg' \/><\/center> <br\/> Cho $a = 2^2 . 3^3 . 5$ <br\/> $b = 2^4 . 3 . 7$ <br\/> V\u1eady BCNN(a, b) = ?","select":["A. $2^2 . 3$ ","B. $2^4 . 3^3 . 5 . 7$","C. $2^4 . 3^3$","D. $5 . 7$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> V\u00ec a, b \u0111\u00e3 ph\u00e2n t\u00edch ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 n\u00ean: <br\/> BCNN(a, b) b\u1eb1ng t\u00edch c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung l\u00e0: 2 v\u00e0 3 <br\/> (s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 2 l\u00e0 $2^4$; s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 3 l\u00e0 $3^3$) <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 ri\u00eang l\u00e0 5 v\u00e0 7 <br\/> (s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 5 v\u00e0 7 l\u00e0 1)<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec $a = 2^2 . 3^3 . 5$ <br\/> $b = 2^4 . 3 . 7$ <br\/> $\\Rightarrow$ BCNN(a; b) = $2^4 . 3^3 . 5 . 7$<br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":762},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/2.jpg' \/><\/center> <br\/> Cho $a = 2. 3^3 . 11$ <br\/> $b = 2^4 . 3 . 5$ <br\/> V\u1eady BCNN(a, b) = ?","select":["A. $2^4 . 3^3$ ","B. $2 . 3 . 5 . 11$","C. $2^4 . 3^3 . 5 . 11$","D. $2 . 3^3$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> V\u00ec a, b \u0111\u00e3 ph\u00e2n t\u00edch ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 n\u00ean: <br\/> BCNN(a, b) b\u1eb1ng t\u00edch c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung l\u00e0 2 v\u00e0 3 <br\/> (S\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 2 l\u00e0 $2^4$, s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 3 l\u00e0 $3^3$) <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 ri\u00eang l\u00e0 5; 11 <br\/> (S\u1ed1 m\u0169 c\u1ee7a 5 v\u00e0 11 l\u00e0 1) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec $a = 2. 3^3 . 11$ <br\/> $b = 2^4 . 3 . 5$ <br\/> $\\Rightarrow$ BCNN(a; b) = $2^4 . 3^3 . 5 . 11$<br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C<\/span>","column":2}]}],"id_ques":763},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/2.jpg' \/><\/center> <br\/> Cho $a = 2 . 3^2 . 7$ <br\/> $b = 2^3 . 5 . 7$ <br\/> $c = 2^3 . 3^2$ <br\/> V\u1eady BCNN(a, b, c) = ?","select":["A. $2^3 . 3^2$ ","B. $2 . 3 . 5 . 7$","C. $3^2 . 5 . 7$","D. $2^3 . 3^2 . 5 . 7$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> V\u00ec a, b, c \u0111\u00e3 ph\u00e2n t\u00edch ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 n\u00ean: <br\/> BCNN(a, b, c) b\u1eb1ng t\u00edch c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung l\u00e0 2<br\/> (S\u1ed1 m\u0169 l\u1edbn nh\u1ea5t c\u1ee7a 2 l\u00e0 $2^3$) <br\/> Th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 ri\u00eang l\u00e0 3; 5; 7 <br\/> (S\u1ed1 m\u0169 c\u1ee7a 3 l\u00e0 $3^2$, s\u1ed1 m\u0169 c\u1ee7a 5 v\u00e0 7 l\u00e0 1) <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec $a = 2 . 3^2 . 7$ <br\/> $b = 2^3 . 5 . 7$ <br\/> $c = 2^3 . 3^2$ <br\/> $\\Rightarrow$ BCNN(a; b; c) = $2^3 . 3^2 . 5 . 7$<br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D<\/span>","column":2}]}],"id_ques":764},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/13.jpg' \/><\/center> <br\/> T\u00ecm x bi\u1ebft x $\\in BC(6; 4)$, $16 \\leq x \\leq 50$?","select":["A. x = 24 ","B. x = 48","C. x = 36","D. C\u1ea3 3 \u0111\u00e1p \u00e1n \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ta c\u00f3 th\u1ec3 t\u00ecm BCNN(6; 4) r\u1ed3i t\u00ecm t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung c\u1ee7a 6 v\u00e0 4 b\u1eb1ng c\u00e1ch l\u1ea5y BCNN nh\u00e2n l\u1ea7n l\u01b0\u1ee3t v\u1edbi c\u00e1c s\u1ed1 0; 1; 2;... <br\/> K\u1ebft h\u1ee3p \u0111i\u1ec1u ki\u1ec7n $16 \\leq x \\leq 50$ \u0111\u1ec3 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec $6 = 2 . 3$ ; $4 = 2^2$ <br\/> $\\Rightarrow$ BCNN(6; 4) = $2^2 . 3 = 12$ <br\/> $\\Rightarrow$ BC(6; 4) = {0; 12; 24; 36; 48; 60;...} <br\/> V\u00ec x $\\in BC(6; 4)$ v\u00e0 $16 \\leq x \\leq 50$ n\u00ean x = 24 ho\u1eb7c x = 36 ho\u1eb7c x = 48 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D<\/span>","column":2}]}],"id_ques":765},{"time":9,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/13.jpg' \/><\/center> <br\/> T\u00ecm x bi\u1ebft x $\\in BC(12; 18)$, $30 \\leq x \\leq 50$?","select":["A. x = 36 ","B. x = 56","C. x = 48","D. x = 72"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Ta c\u00f3 th\u1ec3 t\u00ecm BCNN(12; 18) r\u1ed3i t\u00ecm t\u1eadp h\u1ee3p c\u00e1c b\u1ed9i chung c\u1ee7a 12 v\u00e0 18 b\u1eb1ng c\u00e1ch l\u1ea5y BCNN nh\u00e2n l\u1ea7n l\u01b0\u1ee3t v\u1edbi c\u00e1c s\u1ed1 0; 1; 2;... <br\/> K\u1ebft h\u1ee3p \u0111i\u1ec1u ki\u1ec7n $30\\leq x \\leq 50$ \u0111\u1ec3 t\u00ecm x <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec $18 = 2 . 3^2$ ; $12 = 2^2 . 3$ <br\/> $\\Rightarrow$ BCNN(12; 18) = $2^2 . 3^2 = 36$ <br\/> $\\Rightarrow$ BC(12; 18) = {0; 36; 72; 108;...} <br\/> V\u00ec x $\\in BC(12; 18)$ v\u00e0 $30 \\leq x \\leq 50$ n\u00ean x = 36 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A<\/span>","column":2}]}],"id_ques":766},{"time":9,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"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/bai16/lv1/img\/3.jpg' \/><\/center>","select":["A. $BCNN(12; 20) = 60$ ","B. $BCNN(18; 15) = 30$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(12; 20) v\u00e0 BCNN(18; 15) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> C\u00c1C B\u01af\u1edaC T\u00ccM BCNN <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch m\u1ed7i s\u1ed1 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3 : <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 \u0111\u00f3, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> \u0110\u00f3 ch\u00ednh l\u00e0 BCNN c\u1ea7n t\u00ecm<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $12 = 2^2 . 3$; $20 = 2^2 . 5$ $\\Rightarrow$ BCNN(12; 20) = $2^2 . 3 . 5 = 60$ <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" BCNN(12; 20) = 60 \" l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> $18 = 2 . 3^2$ ; $15 = 3 . 5$ $\\Rightarrow$ BCNN(18; 15) = $2 . 3^2 . 5 = 90$ <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" BCNN(18; 15) = 30 \" 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":767},{"time":9,"part":[{"title":"","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"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/bai16/lv1/img\/3.jpg' \/><\/center>","select":["A. $BCNN(9; 24) = 216$ ","B. $BCNN(24; 10) = 120$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> T\u00ecm BCNN(9; 24) v\u00e0 BCNN(24; 10) r\u1ed3i ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang <br\/> C\u00c1C B\u01af\u1edaC T\u00ccM BCNN <br\/> <b> B\u01b0\u1edbc 1: <\/b> Ph\u00e2n t\u00edch m\u1ed7i s\u1ed1 ra th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> Ch\u1ecdn ra c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 chung v\u00e0 ri\u00eang <br\/> <b> B\u01b0\u1edbc 3 : <\/b> L\u1eadp t\u00edch c\u00e1c th\u1eeba s\u1ed1 nguy\u00ean t\u1ed1 \u0111\u00f3, m\u1ed7i th\u1eeba s\u1ed1 l\u1ea5y v\u1edbi s\u1ed1 m\u0169 l\u1edbn nh\u1ea5t <br\/> \u0110\u00f3 ch\u00ednh l\u00e0 BCNN c\u1ea7n t\u00ecm<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $9 = 3^2$; $24 = 2^3 . 3$ $\\Rightarrow$ BCNN(9; 24) = $2^3 . 3^2 = 72$ <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" BCNN(9; 24) = 216 \" l\u00e0 <b> SAI <\/b> <br\/> $24 = 2^3 . 3$ ; $10 = 2 . 5$ $\\Rightarrow$ BCNN(24; 10) = $2^3 . 3 . 5 = 120$ <br\/> $\\Rightarrow$ Kh\u1eb3ng \u0111\u1ecbnh \" BCNN(24; 10) = 120 \" l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":768},{"time":9,"part":[{"title":" L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t ","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/8.jpg' \/><\/center> <br\/> S\u1ed1 h\u1ecdc sinh l\u1edbp 6A khi x\u1ebfp h\u00e0ng 3, h\u00e0ng 4, h\u00e0ng 5 \u0111\u1ec1u v\u1eeba \u0111\u1ee7 h\u00e0ng. Bi\u1ebft s\u1ed1 h\u1ecdc sinh l\u1edbp \u0111\u00f3 kho\u1ea3ng t\u1eeb 45 \u0111\u1ebfn 65 h\u1ecdc sinh. T\u00ednh s\u1ed1 h\u1ecdc sinh l\u1edbp 6A?","select":["A. 50 h\u1ecdc sinh","B. 60 h\u1ecdc sinh","C. 45 h\u1ecdc sinh","D. 54 h\u1ecdc sinh"],"hint":"S\u1ed1 h\u1ecdc sinh thu\u1ed9c t\u1eadp BC(3; 4; 5)","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu s\u1ed1 h\u1ecdc sinh l\u1edbp 6A l\u00e0 x (h\u1ecdc sinh) <br\/> Khi \u0111\u00f3 x $\\vdots$ 3; x $\\vdots$ 4 v\u00e0 x $\\vdots$ 5 n\u00ean x $\\in$ BC(3; 4; 5) <br\/> Ta \u0111i t\u00ecm x th\u1ecfa m\u00e3n \u0111i\u1ec1u ki\u1ec7n 45 < x < 65 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi s\u1ed1 h\u1ecdc sinh l\u1edbp 6A l\u00e0 x (45 < x < 65) <br\/> V\u00ec khi x\u1ebfp h\u00e0ng 3, h\u00e0ng 4 hay h\u00e0ng 5 \u0111\u1ec1u v\u1eeba \u0111\u1ee7 h\u00e0ng n\u00ean x $\\vdots$ 3; x $\\vdots$ 4; x $\\vdots$ 5 <br\/> $\\Rightarrow$ x $\\in$ BC(3; 4; 5) = {0; 60; 120; 180; 240;...} <br\/> V\u00ec 45 < x < 65 n\u00ean x = 60 <br\/> V\u1eady l\u1edbp 6A c\u00f3 60 h\u1ecdc sinh <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":769},{"time":9,"part":[{"title":" L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t ","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai16/lv1/img\/8.jpg' \/><\/center> <br\/> S\u1ed1 h\u1ecdc sinh l\u1edbp 6B khi x\u1ebfp h\u00e0ng 8, h\u00e0ng 5 hay h\u00e0ng 10 \u0111\u1ec1u v\u1eeba \u0111\u1ee7. Bi\u1ebft s\u1ed1 h\u1ecdc sinh l\u1edbp \u0111\u00f3 kho\u1ea3ng t\u1eeb 35 \u0111\u1ebfn 60 h\u1ecdc sinh. T\u00ednh s\u1ed1 h\u1ecdc sinh l\u1edbp 6B?","select":["A. 60 h\u1ecdc sinh","B. 40 h\u1ecdc sinh","C. 45 h\u1ecdc sinh","D. 50 h\u1ecdc sinh"],"hint":"S\u1ed1 h\u1ecdc sinh thu\u1ed9c t\u1eadp BC(8; 5; 10)","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu s\u1ed1 h\u1ecdc sinh l\u1edbp 6B l\u00e0 x (h\u1ecdc sinh) <br\/> Khi \u0111\u00f3 x $\\vdots$ 8; x $\\vdots$ 5 v\u00e0 x $\\vdots$ 10 n\u00ean x $\\in$ BC(8; 5; 10) <br\/> Ta \u0111i t\u00ecm x th\u1ecfa m\u00e3n \u0111i\u1ec1u ki\u1ec7n 35 < x < 60 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi s\u1ed1 h\u1ecdc sinh l\u1edbp 6B l\u00e0 x (35 < x < 60) <br\/> V\u00ec khi x\u1ebfp h\u00e0ng 8, h\u00e0ng 5 hay h\u00e0ng 10 \u0111\u1ec1u v\u1eeba \u0111\u1ee7 n\u00ean x $\\vdots$ 8; x $\\vdots$ 5; x $\\vdots$ 10 <br\/> $\\Rightarrow$ x $\\in$ BC(8; 5; 10) = {0; 40; 80; 120; 160;...} <br\/> V\u00ec 35 < x < 60 n\u00ean x = 40 <br\/> V\u1eady l\u1edbp 6B c\u00f3 40 h\u1ecdc sinh <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}],"id_ques":770}],"lesson":{"save":0,"level":1}}