{"common":{"save":0,"post_id":"749","level":1,"total":20,"point":5,"point_extra":0},"segment":[{"id":"751","post_id":"749","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"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='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}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"},{"id":"752","post_id":"749","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"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='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}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"},{"id":"753","post_id":"749","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"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='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}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"}]}