{"common":{"save":0,"post_id":"714","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"191","post_id":"714","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"H\u00e3y so s\u00e1nh c\u00e1c t\u00edch sau m\u00e0 kh\u00f4ng t\u00ednh gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c<br\/> A = 2000 . 2000; B = 1999 . 2001","select":["A > B ","A < B ","A = B "],"hint":"\u1ede A t\u00e1ch 2000 = 1999 + 1, \u1edf B t\u00e1ch 2001 = 2000 + 1","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> V\u00ec A = 2000 . 2000 , B = 1999 . 2001 nh\u1eadn th\u1ea5y ta c\u00f3 th\u1ec3 t\u00e1ch 2000 = 1999 + 1 \u1edf A v\u00e0 2001 = 2000 + 1 \u1edf B \u0111\u1ec3 \u1edf c\u1ea3 A v\u00e0 B \u0111\u1ec1u c\u00f3 t\u00edch 1999 . 2000 <br\/> <b> B\u01b0\u1edbc 1: <\/b> A = 2000 . 2000 = (1999 + 1) . 2000<br\/> D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft A th\u00e0nh t\u1ed5ng<br\/> <b> B\u01b0\u1edbc 2: <\/b> B = 1999 . 2001 = 1999 . (2000 + 1) <br\/>D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft B th\u00e0nh t\u1ed5ng <br\/> <b> B\u01b0\u1edbc 3: <\/b> So s\u00e1nh t\u1ed5ng A v\u00e0 t\u1ed5ng B <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $$\\begin{align*} A &= 2000 . 2000 \\\\ A &= (1999 + 1) . 2000 \\\\ A &= 1999 . 2000 + 2000\\end{align*}$$ $\\begin{align*} B &= 1999 . 2001 \\\\ B &= 1999 . (2000 + 1) \\\\ B &= 1999 . 2000 + 1999\\end{align*}$ <br\/> V\u00ec 1999 . 2000 = 1999 . 2000 m\u00e0 2000 > 1999 <br\/> N\u00ean A = 1999 . 2000 + 2000 > B = 1999 . 2000 + 1999<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A > B <\/span>","column":3}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:38"},{"id":"192","post_id":"714","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"H\u00e3y so s\u00e1nh c\u00e1c t\u00edch sau m\u00e0 kh\u00f4ng t\u00ednh gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng bi\u1ec3u th\u1ee9c<br\/> M = 2010. 2014; N = 2012 . 2012","select":["M > N ","M = N ","M < N "],"hint":"\u1ede M t\u00e1ch 2014 = 2012 + 2, \u1edf N t\u00e1ch 2012 = 2010 + 2","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <br\/> <\/span> V\u00ec M = 2010 . 2014, N = 2012 . 2012 nh\u1eadn th\u1ea5y ta c\u00f3 th\u1ec3 t\u00e1ch 2014 = 2012 + 2 \u1edf M v\u00e0 2012 = 2010 + 2 \u1edf N \u0111\u1ec3 \u1edf c\u1ea3 M v\u00e0 N \u0111\u1ec1u c\u00f3 t\u00edch 2010 . 2012 <br\/> <b> B\u01b0\u1edbc 1: <\/b> M = 2010 . 2014 = 2010 . (2012 + 2) <br\/> D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft M th\u00e0nh t\u1ed5ng<br\/> <b> B\u01b0\u1edbc 2: <\/b> N = 2012 . 2012 = (2010 + 2). 2012 <br\/>D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t ph\u00e2n ph\u1ed1i c\u1ee7a ph\u00e9p nh\u00e2n \u0111\u1ed1i v\u1edbi ph\u00e9p c\u1ed9ng \u0111\u1ec3 vi\u1ebft N th\u00e0nh t\u1ed5ng <br\/> <b> B\u01b0\u1edbc 3: <\/b> So s\u00e1nh t\u1ed5ng M v\u00e0 t\u1ed5ng N<br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> $$\\begin{align*} M &= 1010 . 2014 \\\\ M &= 2010 . (2012 + 2) \\\\ M &= 2010 . 2012 + 2 . 2010\\end{align*}$$ $\\begin{align*} N &= 2012 . 2012 \\\\ N &= (2010 + 2) . 2012 \\\\ N &= 2010 . 2012 + 2 . 2012\\end{align*}$ <br\/> V\u00ec 2010 . 2012 = 2010 . 2012 m\u00e0 2 . 2010 < 2 . 2012<br\/> N\u00ean M = 2010 . 2012 + 2 . 2010 < N = 2010 . 2012 + 2 . 2012 <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: M < N <\/span>","column":3}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:38"},{"id":"193","post_id":"714","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"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":[[["11"]]],"list":[{"point":10,"width":50,"type_input":"","ques":"<center><img src='img\/2.jpg' \/><\/center> <br\/>T\u00ecm x bi\u1ebft: <br\/> (83 + 519). x = 66 . 100 + 22 <br\/> x = _input_","hint":"Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5yt\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/><b> B\u01b0\u1edbc 1: <\/b> T\u00ednh 66 . 100 + 22 <br\/> <b> B\u01b0\u1edbc 2: <\/b> x l\u00e0 th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft trong t\u00edch (83 + 519). x <br\/> Mu\u1ed1n t\u00ecm th\u1eeba s\u1ed1 ch\u01b0a bi\u1ebft ta l\u1ea5y t\u00edch chia cho th\u1eeba s\u1ed1 \u0111\u00e3 bi\u1ebft <\/span><br\/> <br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $\\begin{align*} (83 + 519).x &= 66 . 100 + 22 \\\\ (83 + 519). x &= 6600 + 22 \\\\ 602 . x &= 6622 \\\\ x &= 6622 : 602 \\\\ x &= 11 \\end{align*}$ <br\/> <span class='basic_pink'>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 11<\/span>"}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:38"}]}