{"id":20776,"date":"2021-12-17T16:10:58","date_gmt":"2021-12-17T09:10:58","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=20776"},"modified":"2021-12-17T16:10:59","modified_gmt":"2021-12-17T09:10:59","slug":"ham-so-luong-giac","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/ham-so-luong-giac\/","title":{"rendered":"H\u00c0M S\u1ed0 L\u01af\u1ee2NG GI\u00c1C"},"content":{"rendered":"\n<p><\/p>\n\n\n<p><strong>1. H\u00e0m s\u1ed1 <\/strong> <img decoding=\"async\" width=\"75\" height=\"27\" class=\"wp-image-20777\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_256-16.png\" alt=\"IMG_256\" \/><\/p>\n<p><img decoding=\"async\" width=\"22\" height=\"17\" class=\"wp-image-20778\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_257-15.png\" alt=\"IMG_257\" \/> T\u1eadp x\u00e1c \u0111\u1ecbnh: <img decoding=\"async\" width=\"55\" height=\"22\" class=\"wp-image-20779\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_258-16.png\" alt=\"IMG_258\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20780\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_259-14.png\" alt=\"IMG_259\" \/> T\u1eadp gi\u00e1c tr\u1ecb: <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"27\" class=\"wp-image-20781\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_260-16.png\" alt=\"IMG_260\" \/> , t\u1ee9c l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"24\" class=\"wp-image-20782\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_261-13.png\" alt=\"IMG_261\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20783\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_262-14.png\" alt=\"IMG_262\" \/> H\u00e0m s\u1ed1 \u0111\u1ed3ng bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"52\" class=\"wp-image-20784\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_263-15.png\" alt=\"IMG_263\" \/> , ngh\u1ecbch bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"172\" height=\"52\" class=\"wp-image-20785\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_264-14.png\" alt=\"IMG_264\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20786\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_265-14.png\" alt=\"IMG_265\" \/> H\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"27\" class=\"wp-image-20787\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_266-14.png\" alt=\"IMG_266\" \/> l\u00e0 h\u00e0m s\u1ed1 l\u1ebb n\u00ean \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 nh\u1eadn g\u1ed1c t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"20\" height=\"24\" class=\"wp-image-20788\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_267-15.png\" alt=\"IMG_267\" \/> l\u00e0m t\u00e2m \u0111\u1ed1i x\u1ee9ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20789\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_268-15.png\" alt=\"IMG_268\" \/> H\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"27\" class=\"wp-image-20790\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_269-15.png\" alt=\"IMG_269\" \/> l\u00e0 h\u00e0m s\u1ed1 tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"62\" height=\"24\" class=\"wp-image-20791\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_270-13.png\" alt=\"IMG_270\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20792\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_271-15.png\" alt=\"IMG_271\" \/> \u0110\u1ed3 th\u1ecb h\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"27\" class=\"wp-image-20793\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_272-15.png\" alt=\"IMG_272\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"179\" class=\"wp-image-20794\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_273.jpeg\" alt=\"IMG_273\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_273.jpeg 567w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_273-300x95.jpeg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>\n<p><strong>2. H\u00e0m s\u1ed1 <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20795\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_274-15.png\" alt=\"IMG_274\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"17\" class=\"wp-image-20796\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_275-14.png\" alt=\"IMG_275\" \/> T\u1eadp x\u00e1c \u0111\u1ecbnh: <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"22\" class=\"wp-image-20797\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_276-15.png\" alt=\"IMG_276\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20798\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_277-15.png\" alt=\"IMG_277\" \/> T\u1eadp gi\u00e1c tr\u1ecb: <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"27\" class=\"wp-image-20799\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_278-15.png\" alt=\"IMG_278\" \/> , t\u1ee9c l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"24\" class=\"wp-image-20800\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_279-13.png\" alt=\"IMG_279\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20801\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_280-15.png\" alt=\"IMG_280\" \/> H\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20802\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_281-14.png\" alt=\"IMG_281\" \/> ngh\u1ecbch bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"128\" height=\"27\" class=\"wp-image-20803\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_282-15.png\" alt=\"IMG_282\" \/> , \u0111\u1ed3ng bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"137\" height=\"27\" class=\"wp-image-20804\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_283-14.png\" alt=\"IMG_283\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20805\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_284-14.png\" alt=\"IMG_284\" \/> H\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20806\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_285-15.png\" alt=\"IMG_285\" \/> l\u00e0 h\u00e0m s\u1ed1 ch\u1eb5n n\u00ean \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 nh\u1eadn tr\u1ee5c <img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"27\" class=\"wp-image-20807\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_286-14.png\" alt=\"IMG_286\" \/> l\u00e0m tr\u1ee5c \u0111\u1ed1i x\u1ee9ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20808\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_287-15.png\" alt=\"IMG_287\" \/> H\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20809\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_288-15.png\" alt=\"IMG_288\" \/> l\u00e0 h\u00e0m s\u1ed1 tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"62\" height=\"24\" class=\"wp-image-20810\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_289-16.png\" alt=\"IMG_289\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20811\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_290-15.png\" alt=\"IMG_290\" \/> \u0110\u1ed3 th\u1ecb h\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20812\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_291-15.png\" alt=\"IMG_291\" \/> .<\/p>\n<p>\u0110\u1ed3 th\u1ecb h\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"22\" class=\"wp-image-20813\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_292-15.png\" alt=\"IMG_292\" \/> b\u1eb1ng c\u00e1ch t\u1ecbnh ti\u1ebfn \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"27\" class=\"wp-image-20814\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_293-15.png\" alt=\"IMG_293\" \/><\/p>\n<p>theo v\u00e9c t\u01a1 <img loading=\"lazy\" decoding=\"async\" width=\"99\" height=\"52\" class=\"wp-image-20815\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_294-15.png\" alt=\"IMG_294\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"161\" class=\"wp-image-20816\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_295.jpeg\" alt=\"IMG_295\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_295.jpeg 567w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_295-300x85.jpeg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>\n<p><strong>3. H\u00e0m s\u1ed1 <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"25\" class=\"wp-image-20817\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_296-15.png\" alt=\"IMG_296\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20818\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_297-15.png\" alt=\"IMG_297\" \/> T\u1eadp x\u00e1c \u0111\u1ecbnh : <img loading=\"lazy\" decoding=\"async\" width=\"204\" height=\"57\" class=\"wp-image-20819\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_298-15.png\" alt=\"IMG_298\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20820\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_299-15.png\" alt=\"IMG_299\" \/> T\u1eadp gi\u00e1 tr\u1ecb: <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-20821\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_300-15.png\" alt=\"IMG_300\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20822\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_301-15.png\" alt=\"IMG_301\" \/> L\u00e0 h\u00e0m s\u1ed1 l\u1ebb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20823\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_302-15.png\" alt=\"IMG_302\" \/> L\u00e0 h\u00e0m s\u1ed1 tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"24\" class=\"wp-image-20824\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_303-15.png\" alt=\"IMG_303\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_303-15.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_303-15-50x24.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20825\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_304-15.png\" alt=\"IMG_304\" \/> H\u00e0m \u0111\u1ed3ng bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"160\" height=\"57\" class=\"wp-image-20826\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_305-15.png\" alt=\"IMG_305\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20827\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_306-15.png\" alt=\"IMG_306\" \/> \u0110\u1ed3 th\u1ecb nh\u1eadn m\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"149\" height=\"52\" class=\"wp-image-20828\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_307-15.png\" alt=\"IMG_307\" \/> l\u00e0m m\u1ed9t \u0111\u01b0\u1eddng ti\u1ec7m c\u1eadn.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20829\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_308-15.png\" alt=\"IMG_308\" \/> \u0110\u1ed3 th\u1ecb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"568\" height=\"233\" class=\"wp-image-20830\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_309.jpeg\" alt=\"IMG_309\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_309.jpeg 568w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_309-300x123.jpeg 300w\" sizes=\"(max-width: 568px) 100vw, 568px\" \/><\/p>\n<p><strong>4. H\u00e0m s\u1ed1 <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"25\" class=\"wp-image-20831\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_310-15.png\" alt=\"IMG_310\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20832\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_311-14.png\" alt=\"IMG_311\" \/> T\u1eadp x\u00e1c \u0111\u1ecbnh : <img loading=\"lazy\" decoding=\"async\" width=\"165\" height=\"34\" class=\"wp-image-20833\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_312-14.png\" alt=\"IMG_312\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20834\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_313-14.png\" alt=\"IMG_313\" \/> T\u1eadp gi\u00e1 tr\u1ecb: <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-20835\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_314-14.png\" alt=\"IMG_314\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20836\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_315-14.png\" alt=\"IMG_315\" \/> L\u00e0 h\u00e0m s\u1ed1 l\u1ebb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20837\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_316-14.png\" alt=\"IMG_316\" \/> L\u00e0 h\u00e0m s\u1ed1 tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"24\" class=\"wp-image-20838\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_317-14.png\" alt=\"IMG_317\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_317-14.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_317-14-50x24.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20839\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_318-14.png\" alt=\"IMG_318\" \/> H\u00e0m ngh\u1ecbch bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng <img loading=\"lazy\" decoding=\"async\" width=\"105\" height=\"34\" class=\"wp-image-20840\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_319-14.png\" alt=\"IMG_319\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20841\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_320-14.png\" alt=\"IMG_320\" \/> \u0110\u1ed3 th\u1ecb nh\u1eadn m\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"115\" height=\"27\" class=\"wp-image-20842\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_321-13.png\" alt=\"IMG_321\" \/> l\u00e0m m\u1ed9t \u0111\u01b0\u1eddng ti\u1ec7m c\u1eadn.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"17\" class=\"wp-image-20843\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_322-13.png\" alt=\"IMG_322\" \/> \u0110\u1ed3 th\u1ecb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"238\" class=\"wp-image-20844\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_323.jpeg\" alt=\"IMG_323\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_323.jpeg 567w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_323-300x126.jpeg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>1. H\u00e0m s\u1ed1 T\u1eadp x\u00e1c \u0111\u1ecbnh: T\u1eadp gi\u00e1c tr\u1ecb: , t\u1ee9c l\u00e0 H\u00e0m s\u1ed1 \u0111\u1ed3ng bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng , ngh\u1ecbch bi\u1ebfn tr\u00ean m\u1ed7i kho\u1ea3ng . H\u00e0m s\u1ed1 l\u00e0 h\u00e0m s\u1ed1 l\u1ebb n\u00ean \u0111\u1ed3 th\u1ecb h\u00e0m s\u1ed1 nh\u1eadn g\u1ed1c t\u1ecda \u0111\u1ed9 l\u00e0m t\u00e2m \u0111\u1ed1i x\u1ee9ng. H\u00e0m s\u1ed1 l\u00e0 h\u00e0m s\u1ed1 tu\u1ea7n ho\u00e0n v\u1edbi chu k\u00ec [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[42],"tags":[],"class_list":["post-20776","post","type-post","status-publish","format-standard","hentry","category-toan-lop-11"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/20776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=20776"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/20776\/revisions"}],"predecessor-version":[{"id":20845,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/20776\/revisions\/20845"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=20776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=20776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=20776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}