{"segment":[{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/4.jpg' \/><\/center> <br\/> 94182 - 51938 chia h\u1ebft cho 2 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"M\u1ed9t hi\u1ec7u chia h\u1ebft cho m\u1ed9t s\u1ed1 n\u1ebfu c\u1ea3 s\u1ed1 b\u1ecb tr\u1eeb v\u00e0 s\u1ed1 tr\u1eeb \u0111\u1ec1u chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> QUY T\u1eaeC: <\/b> <br\/> <b> * <\/b> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng c\u1ee7a m\u1ed9t t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho c\u00f9ng m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3. <br\/> a $\\vdots$ m, b $\\vdots$ m v\u00e0 c $\\vdots$ m $\\Rightarrow$ (a + b + c) $\\vdots$ m <br\/> <b> * <\/b> N\u1ebfu ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1ng trong t\u1ed5ng kh\u00f4ng chia h\u1ebft cho m\u1ed9t s\u1ed1, c\u00f2n c\u00e1c s\u1ed1 h\u1ea1ng kh\u00e1c \u0111\u1ec1u chia h\u1ebft cho s\u1ed1 \u0111\u00f3 th\u00ec t\u1ed5ng kh\u00f4ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <br\/> a $\\not \\vdots$ m, b $\\vdots$ m v\u00e0 c $\\vdots$ m $\\Rightarrow$ (a + b + c) $\\not \\vdots$ m <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Theo t\u00ednh ch\u1ea5t chia h\u1ebft c\u1ee7a m\u1ed9t hi\u1ec7u: <br\/> V\u00ec 94182 $\\vdots$ 2 v\u00e0 51938 $\\vdots$ 2 $\\Rightarrow$ (94182 - 51938) $\\vdots$ 2 <br\/> N\u00ean kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span> ","column":2}]}],"id_ques":431},{"time":24,"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/bai9/lv2/img\/4.jpg' \/><\/center> <br\/> 87193 + 4715 chia h\u1ebft cho 5 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"M\u1ed9t t\u1ed5ng chia h\u1ebft cho m\u1ed9t s\u1ed1 n\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> QUY T\u1eaeC: <\/b> <br\/> <b> * <\/b> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng c\u1ee7a m\u1ed9t t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho c\u00f9ng m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3. <br\/> a $\\vdots$ m, b $\\vdots$ m v\u00e0 c $\\vdots$ m $\\Rightarrow$ (a + b + c) $\\vdots$ m <br\/> <b> * <\/b> N\u1ebfu ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1ng trong t\u1ed5ng kh\u00f4ng chia h\u1ebft cho m\u1ed9t s\u1ed1, c\u00f2n c\u00e1c s\u1ed1 h\u1ea1ng kh\u00e1c \u0111\u1ec1u chia h\u1ebft cho s\u1ed1 \u0111\u00f3 th\u00ec t\u1ed5ng kh\u00f4ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <br\/> a $\\not \\vdots$ m, b $\\vdots$ m v\u00e0 c $\\vdots$ m $\\Rightarrow$ (a + b + c) $\\not \\vdots$ m <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Theo t\u00ednh ch\u1ea5t chia h\u1ebft c\u1ee7a m\u1ed9t t\u1ed5ng: <br\/> V\u00ec 87193 $\\not \\vdots$ 5 v\u00e0 4715 $\\vdots$ 5 $\\Rightarrow$ (87193 + 4715) $\\not \\vdots$ 5 <br\/> N\u00ean kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 <b> SAI <\/b> <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":2}]}],"id_ques":432},{"time":24,"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/bai9/lv2/img\/4.jpg' \/><\/center> <br\/> 5 . 119387 kh\u00f4ng chia h\u1ebft cho 5 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"N\u1ebfu a $\\vdots$ m th\u00ec a . b $\\vdots$ m","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu a $\\vdots$ m th\u00ec a . b $\\vdots$ m <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 5 $\\vdots$ 5 n\u00ean 5 . 119387 $\\vdots$ 5 <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0 sai <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":2}]}],"id_ques":433},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/2.jpg' \/><\/center> <br\/> Chia m\u1ed9t s\u1ed1 cho 12 \u0111\u01b0\u1ee3c d\u01b0 l\u00e0 9. S\u1ed1 \u0111\u00f3:","select":["A. Chia h\u1ebft cho 3 ","B. Kh\u00f4ng chia h\u1ebft cho 3 "],"hint":"X\u00e9t xem 12 v\u00e0 s\u1ed1 d\u01b0 c\u00f3 chia h\u1ebft cho 3 kh\u00f4ng?","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> X\u00e9t xem 12 c\u00f3 chia h\u1ebft cho 3 kh\u00f4ng <br\/> X\u00e9t xem s\u1ed1 d\u01b0 c\u00f3 chia h\u1ebft cho 3 kh\u00f4ng <br\/> N\u1ebfu s\u1ed1 chia v\u00e0 th\u01b0\u01a1ng \u0111\u1ec1u chia h\u1ebft cho 3 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 12 $\\vdots$ 3 v\u00e0 9 $\\vdots$ 3 <br\/> N\u00ean s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span> ","column":2}]}],"id_ques":434},{"time":24,"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/bai9/lv2/img\/2.jpg' \/><\/center> <br\/> Chia m\u1ed9t s\u1ed1 cho 15 \u0111\u01b0\u1ee3c d\u01b0 l\u00e0 10. S\u1ed1 \u0111\u00f3:","select":["A. Chia h\u1ebft cho 3 ","B. Chia h\u1ebft cho 5 "],"hint":"X\u00e9t xem 15 v\u00e0 s\u1ed1 d\u01b0 c\u00f3 chia h\u1ebft cho 3 hay 5 kh\u00f4ng?","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> X\u00e9t xem 15 c\u00f3 chia h\u1ebft cho 3 hay 5 kh\u00f4ng <br\/> X\u00e9t xem s\u1ed1 d\u01b0 c\u00f3 chia h\u1ebft cho 3 hay 5 kh\u00f4ng <br\/> N\u1ebfu s\u1ed1 chia v\u00e0 th\u01b0\u01a1ng \u0111\u1ec1u chia h\u1ebft cho 3 hay 5 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 15 $\\vdots$ 5 v\u00e0 10 $\\vdots$ 5 <br\/> N\u00ean s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 5 <br\/> V\u00ec 15 $\\vdots$ 3 v\u00e0 10 $\\not \\vdots$ 3 <br\/> N\u00ean s\u1ed1 \u0111\u00f3 kh\u00f4ng chia h\u1ebft cho 3<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":2}]}],"id_ques":435},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/4.jpg' \/><\/center> <br\/> Cho S = 12 + 30 + 54 + x ($x \\in \\mathbb{N}$). \u0110i\u1ec1u ki\u1ec7n \u0111\u1ec3 S chia h\u1ebft cho 6 l\u00e0:","select":["A. x c\u00f3 ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 6 ","B. x l\u00e0 s\u1ed1 ch\u1eb5n ","C. x chia h\u1ebft cho 3 ","D. x chia h\u1ebft cho 6 "],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1eebng s\u1ed1 h\u1ea1ng trong t\u1ed5ng tr\u00ean \u0111\u1ec1u chia h\u1ebft cho 6 <br\/> Th\u00ec \u0111\u1ec3 S chia h\u1ebft cho 6, x c\u0169ng ph\u1ea3i chia h\u1ebft cho 6 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 12 $\\vdots$ 6; 30 $\\vdots$ 6; 30 $\\vdots$ 6; 54 $\\vdots$ 6 <br\/> N\u00ean \u0111\u1ec3 S chia h\u1ebft cho 6 th\u00ec x c\u0169ng chia h\u1ebft cho 6 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D <\/span> ","column":2}]}],"id_ques":436},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/4.jpg' \/><\/center> <br\/> Cho S = 35 + 49 + 77 + x ($x \\in \\mathbb{N}$). \u0110i\u1ec1u ki\u1ec7n \u0111\u1ec3 S chia h\u1ebft cho 7 l\u00e0:","select":["A. x c\u00f3 ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 7 ","B. x l\u00e0 s\u1ed1 l\u1ebb ","C. x chia h\u1ebft cho 5 ","D. x chia h\u1ebft cho 7 "],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1eebng s\u1ed1 h\u1ea1ng trong t\u1ed5ng tr\u00ean \u0111\u1ec1u chia h\u1ebft cho 7 <br\/> Th\u00ec \u0111\u1ec3 S chia h\u1ebft cho 7, x c\u0169ng ph\u1ea3i chia h\u1ebft cho 7 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec 35 $\\vdots$ 7; 49 $\\vdots$ 7; 77 $\\vdots$ 7 <br\/> N\u00ean \u0111\u1ec3 S chia h\u1ebft cho 7 th\u00ec x c\u0169ng chia h\u1ebft cho 7 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D <\/span> ","column":2}]}],"id_ques":437},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/11.jpg' \/><\/center> <br\/> T\u1ed5ng 3 s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp chia h\u1ebft cho 3 <b> \u0110\u00daNG <\/b> hay <\/b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"G\u1ecdi ba s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 1; a v\u00e0 a + 1 t\u00ednh t\u1ed5ng 3 s\u1ed1 xem c\u00f3 chia h\u1ebft cho 3 kh\u00f4ng?","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> G\u1ecdi ba s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 1; a v\u00e0 a + 1 <br\/> T\u00ednh t\u1ed5ng 3 s\u1ed1 v\u00e0 x\u00e9t xem t\u1ed5ng \u0111\u00f3 c\u00f3 chia h\u1ebft cho 3 kh\u00f4ng? <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi 3 s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 1; a v\u00e0 a + 1 (a $\\in \\mathbb{N^*}$) <br\/> T\u1ed5ng 3 s\u1ed1 l\u00e0: (a - 1) + a + (a + 1) = a - 1 + a + a + 1 = 3a<br\/> 3a $\\vdots$ 3 v\u00ec 3 $\\vdots$ 3 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: \u0110\u00daNG <\/span> ","column":2}]}],"id_ques":438},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/11.jpg' \/><\/center> <br\/> T\u1ed5ng 5 s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp chia h\u1ebft cho 5 <b> \u0110\u00daNG <\/b> hay <\/b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"G\u1ecdi n\u0103m s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 2; a - 1; a; a + 1; a + 2 t\u00ednh t\u1ed5ng 5 s\u1ed1 xem c\u00f3 chia h\u1ebft cho 5 kh\u00f4ng?","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> G\u1ecdi n\u0103m s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 2; a - 1; a v\u00e0 a + 1 v\u00e0 a + 2 <br\/> T\u00ednh t\u1ed5ng 5 s\u1ed1 v\u00e0 x\u00e9t xem t\u1ed5ng \u0111\u00f3 c\u00f3 chia h\u1ebft cho 5 kh\u00f4ng? <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi 5 s\u1ed1 t\u1ef1 nhi\u00ean li\u00ean ti\u1ebfp l\u00e0 a - 2; a - 1; a; a + 1; a + 2 (a $\\in \\mathbb{N}$) <br\/> T\u1ed5ng 5 s\u1ed1 l\u00e0: <br\/> (a - 2) + (a - 1) + a + (a + 1) + (a + 2) = a - 2 + a - 1 + a + a + 1 + a + 2 = 5a <br\/> 5a $\\vdots$ 5 v\u00ec 5 $\\vdots$ 5 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: \u0110\u00daNG <\/span> ","column":2}]}],"id_ques":439},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/3.jpg' \/><\/center> <br\/> Kh\u00f4ng th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh h\u00e3y cho bi\u1ebft: <br\/> T\u1ed5ng 91432 + 83205 chia h\u1ebft cho s\u1ed1 n\u00e0o sau \u0111\u00e2y?","select":["A. $\\vdots$ 3","B. $\\vdots$ 5","C. $\\vdots$ 2","D. C\u1ea3 3 \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u sai."],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> +) 91432 $\\not \\vdots$ 3 (v\u00ec t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u00e0: 9 + 1 + 4 + 3 + 2 = 19 $\\not \\vdots$ 3) <br\/> 83205 $\\vdots$ 3 (v\u00ec t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u00e0 8 + 3 + 2 + 0 + 5 = 18 $\\vdots$ 3) <br\/> $\\Rightarrow$ (91432 + 83205) $\\not \\vdots$ 3 <br\/> +) 91432 $\\vdots$ 2 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 2) <br\/> +) 83205 $\\not \\vdots$ 2 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 5) <br\/> $\\Rightarrow$ (91432 + 83205) $\\not \\vdots$ 2 <br\/> +) 91432 $\\not \\vdots$ 5 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 2) <br\/> 83205 $\\vdots$ 5 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 5) <br\/> $\\Rightarrow$ (91432 + 83205) $\\not \\vdots$ 5 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D <\/span> ","column":2}]}],"id_ques":440},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/daiso/bai9/lv2/img\/3.jpg' \/><\/center> <br\/> Kh\u00f4ng th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh h\u00e3y cho bi\u1ebft: <br\/> T\u1ed5ng 3120 + 9410 chia h\u1ebft cho s\u1ed1 n\u00e0o sau \u0111\u00e2y?","select":["A. $\\vdots$ 2","B. $\\vdots$ 5","C. $\\vdots$ 7","D. C\u1ea3 A v\u00e0 B \u0111\u1ec1u \u0111\u00fang"],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t trong c\u00e1c s\u1ed1 tr\u00ean th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> +) 3120 $ \\vdots$ 2 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 0) <br\/> 9410 $\\vdots$ 2 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 0) <br\/> $\\Rightarrow$ (3120 + 9410) $ \\vdots$ 2 <br\/> +) 3120 $\\vdots$ 5 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 0) <br\/> +) 9410 $ \\vdots$ 5 (v\u00ec ch\u1eef s\u1ed1 t\u1eadn c\u00f9ng l\u00e0 0) <br\/> $\\Rightarrow$ (3120 + 9410) $ \\vdots$ 5 <br\/> +) T\u1ed5ng (3120 + 9410) $\\not \\vdots$ 7 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D <\/span> ","column":2}]}],"id_ques":441},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" X\u00e9t xem t\u1ed5ng S = 12 . 173 + 36 . 41 + 21 c\u00f3 chia h\u1ebft cho 12 kh\u00f4ng?","select":["A. S $\\vdots$ 12","B. S $\\not \\vdots$ 12"],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho 12 th\u00ec t\u1ed5ng chia h\u1ebft cho 12","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho 12 th\u00ec t\u1ed5ng chia h\u1ebft cho 12 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> 12 . 173 $\\vdots$ 12; 36 . 41 $\\vdots$ 12; 21 $\\not \\vdots$ 12 <br\/> $\\Rightarrow$ (12 . 173 + 36 . 41 + 21) $\\not \\vdots$ 12 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":2}]}],"id_ques":442},{"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":" X\u00e9t xem t\u1ed5ng S = 3 . 241 . 4 + 24 . k ($k \\in \\mathbb{N}$) c\u00f3 chia h\u1ebft cho 12 kh\u00f4ng?","select":["A. S $\\vdots$ 12","B. S $\\not \\vdots$ 12"],"hint":"N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho 12 th\u00ec t\u1ed5ng chia h\u1ebft cho 12","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu m\u1ecdi s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho 12 th\u00ec t\u1ed5ng chia h\u1ebft cho 12 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> 3 . 241 . 4 = 12 . 241 $\\vdots$ 12 (v\u00ec 12 $\\vdots$ 12); 24 . k $\\vdots$ 12 (v\u00ec 24 $\\vdots$ 12) <br\/> $\\Rightarrow$ (3 . 241 . 4 + 24 . k) $ \\vdots$ 12 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span> ","column":2}]}],"id_ques":443},{"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":" Chia m\u1ed9t s\u1ed1 cho 9 \u0111\u01b0\u1ee3c d\u01b0 l\u00e0 6. S\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"N\u1ebfu c\u1ea3 s\u1ed1 chia v\u00e0 d\u01b0 \u0111\u1ec1u chia h\u1ebft cho 3 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu c\u1ea3 s\u1ed1 chia v\u00e0 d\u01b0 \u0111\u1ec1u chia h\u1ebft cho 3 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> G\u1ecdi s\u1ed1 b\u1ecb chia l\u00e0 a , th\u01b0\u01a1ng l\u00e0 b (a, b $\\in \\mathbb{N}$) <br\/>V\u00ec a chia 9 \u0111\u01b0\u1ee3c th\u01b0\u01a1ng l\u00e0 b v\u00e0 d\u01b0 l\u00e0 6 n\u00ean ta c\u00f3: a = 9 . b + 6 <br\/> 9 . b $\\vdots$ 3 (v\u00ec 9 $\\vdots$ 3) v\u00e0 6 $\\vdots$ 3 <br\/> N\u00ean (9.b + 6) $\\vdots$ 3 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: \u0110\u00daNG <\/span> ","column":2}]}],"id_ques":444},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" Chia m\u1ed9t s\u1ed1 cho 15 \u0111\u01b0\u1ee3c d\u01b0 l\u00e0 12. S\u1ed1 \u0111\u00f3 kh\u00f4ng chia h\u1ebft cho 3 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"N\u1ebfu c\u1ea3 s\u1ed1 chia v\u00e0 d\u01b0 \u0111\u1ec1u chia h\u1ebft cho 3 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu c\u1ea3 s\u1ed1 chia v\u00e0 d\u01b0 \u0111\u1ec1u chia h\u1ebft cho 3 th\u00ec s\u1ed1 \u0111\u00f3 chia h\u1ebft cho 3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> G\u1ecdi s\u1ed1 b\u1ecb chia l\u00e0 a , th\u01b0\u01a1ng l\u00e0 b (a, b $\\in \\mathbb{N}$) <br\/>V\u00ec a chia 15 \u0111\u01b0\u1ee3c th\u01b0\u01a1ng l\u00e0 b v\u00e0 d\u01b0 l\u00e0 12 n\u00ean ta c\u00f3: a = 15 . b + 12 <br\/> 15 . b $\\vdots$ 3 (v\u00ec 15 $\\vdots$ 3) v\u00e0 12 $\\vdots$ 3 <br\/> N\u00ean (15 . b + 12) $\\vdots$ 3 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: SAI <\/span> ","column":2}]}],"id_ques":445},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" H\u00e3y ch\u1ecdn ph\u00e9p t\u00ednh c\u00f3 k\u1ebft qu\u1ea3 chia h\u1ebft cho 6","select":["A. 2142 + 387","B. 3 . 832 + 18","C. 942 + 831"],"hint":"N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> +) V\u00ec 2142 $\\vdots$ 6 (v\u00ec 2142 $\\vdots$ 2 v\u00e0 2142 c\u00f3 t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u00e0 2 + 1 + 4 + 2 = 9 $\\vdots$ 3) <br\/> V\u00e0 387 $\\not \\vdots$ 6 (v\u00ec 387 $\\not \\vdots$ 2) <br\/> N\u00ean (2142 + 387) $\\not \\vdots$ 6 <br\/> +) 3 . 832 $\\vdots$ 6 (v\u00ec 832 $\\vdots$ 2 n\u00ean 3 . 832 $\\vdots$ 6) <br\/> V\u00e0 18 $\\vdots$ 6 $\\Rightarrow$ (3 . 832 + 18) $\\vdots$ 6 <br\/> +) 942 $\\vdots$ 6 (v\u00ec 942 c\u00f3 t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u00e0 9 + 4 + 2 = 15 $\\vdots$ 3 v\u00e0 942 $\\vdots$ 2) <br\/> 831 $\\not \\vdots$ 6 (v\u00ec 831 $\\not \\vdots$ 2 n\u00ean 831 $\\not \\vdots$ 6) <br\/> $\\Rightarrow$ (942 + 831) $\\not \\vdots$ 6 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":3}]}],"id_ques":446},{"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":" H\u00e3y ch\u1ecdn ph\u00e9p t\u00ednh c\u00f3 k\u1ebft qu\u1ea3 chia h\u1ebft cho 6","select":["A. 2142 - 48","B. 831 - 24","C. 3 . 728 - 43"],"hint":"N\u1ebfu c\u1ea3 s\u1ed1 b\u1ecb tr\u1eeb v\u00e0 s\u1ed1 tr\u1eeb \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec hi\u1ec7u chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu c\u1ea3 s\u1ed1 b\u1ecb tr\u1eeb v\u00e0 s\u1ed1 tr\u1eeb \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec hi\u1ec7u chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> +) 2142 $\\vdots$ 6 (v\u00ec 2142 $\\vdots$ 2 v\u00e0 2142 c\u00f3 t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u00e0 2 + 1 + 4 + 2 = 9 $\\vdots$ 3) v\u00e0 48 $\\vdots$ 6 <br\/> $\\Rightarrow$ (2142 - 48) $\\vdots$ 6<br\/> +) 831 $\\not \\vdots$ 6 (v\u00ec 831 $\\not \\vdots$ 2) v\u00e0 24 $\\vdots$ 6 <br\/> $\\Rightarrow$ (831 - 24) $\\not \\vdots$ 6 <br\/> +) 3 . 728 $\\vdots$ 6 (v\u00ec 728 $\\vdots$ 2 n\u00ean 3 . 728 $\\vdots$ 6) v\u00e0 43 $\\not \\vdots$ 6 <br\/> $\\Rightarrow$ (3 . 728 - 43) $\\not \\vdots$ 6<br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span> ","column":3}]}],"id_ques":447},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" H\u00e3y ch\u1ecdn ph\u00e9p t\u00ednh c\u00f3 k\u1ebft qu\u1ea3 chia h\u1ebft cho 6","select":["A. 3213 + 480","B. 3 . 920 + 24","C. 3 . 911 + 36"],"hint":"N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> +) 3213 $\\not \\vdots$ 6 (v\u00ec 3213 $\\not \\vdots$ 2) v\u00e0 480 $\\vdots$ 6 <br\/> $\\Rightarrow$ (3213 + 480) $\\not \\vdots$ 6 <br\/> +) 3 . 920 $\\vdots$ 6 (v\u00ec 920 $\\vdots$ 2 n\u00ean 3 . 920 $\\vdots$ 6) v\u00e0 24 $\\vdots$ 6 <br\/> $\\Rightarrow$ (3 . 920 + 24) $\\vdots$ 6 <br\/> +) 3 . 911 $\\not \\vdots$ 6 (v\u00ec 911 $\\not \\vdots$ 3) v\u00e0 36 $\\vdots$ 6 <br\/> $\\Rightarrow$ (3 . 911 + 36) $\\not \\vdots$ 6 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B <\/span> ","column":3}]}],"id_ques":448},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":" $2002^{2001} + 2001^{2002}$ chia h\u1ebft cho 2 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $2002^{2001}$ $\\vdots$ 2 (v\u00ec 2002 $\\vdots$ 2) <br\/> $2001^{2002}$ $\\not \\vdots$ 2 (v\u00ec 2001 $\\vdots$ 2) <br\/> $\\Rightarrow$ $2002^{2001} + 2001^{2002}$ $\\not \\vdots$ 2 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: SAI <\/span> ","column":2}]}],"id_ques":449},{"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":" $3^{1975} + 15^{42}$ chia h\u1ebft cho 3 <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG","B. SAI"],"hint":"N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 h\u1ea1ng trong t\u1ed5ng \u0111\u1ec1u chia h\u1ebft cho m\u1ed9t s\u1ed1 th\u00ec t\u1ed5ng chia h\u1ebft cho s\u1ed1 \u0111\u00f3<\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> $3^{1975}$ $\\vdots$ 3 (3 $\\vdots$ 3) <br\/> $15^{42}$ $ \\vdots$ 3 (v\u00ec 15 $\\vdots$ 3) <br\/> $\\Rightarrow$ $3^{1975} + 15^{42}$ $ \\vdots$ 3 <br\/> <span class='basic_pink'> V\u1eady kh\u1eb3ng \u0111\u1ecbnh tr\u00ean l\u00e0: \u0110\u00daNG <\/span> ","column":2}]}],"id_ques":450}],"lesson":{"save":0,"level":2}}