{"id":18422,"date":"2024-03-23T05:00:52","date_gmt":"2024-03-23T05:00:52","guid":{"rendered":"https:\/\/soicau2078.minhngocxoso.com\/?p=18422"},"modified":"2024-03-23T05:00:52","modified_gmt":"2024-03-23T05:00:52","slug":"thong-ke-tong-de-la-gi-cach-bat-tong-lo-de-tuan-mien-bac-2024","status":"publish","type":"post","link":"https:\/\/lodepnhathomnay.com\/thong-ke-tong-de-la-gi-cach-bat-tong-lo-de-tuan-mien-bac-2024\/","title":{"rendered":"Th\u1ed1ng k\u00ea t\u1ed5ng \u0111\u1ec1 l\u00e0 g\u00ec? C\u00e1ch b\u1eaft t\u1ed5ng l\u00f4 \u0111\u1ec1 tu\u1ea7n mi\u1ec1n B\u1eafc 2024"},"content":{"rendered":"
Soi c\u1ea7u b\u1eb1ng c\u00e1ch<\/span> t\u1ed5ng \u0111\u1ec1 kh\u00f4ng c\u00f2n<\/span> qu\u00e1 xa l\u1ea1<\/span> v\u1edbi b\u1ea1n b\u00e8<\/span> l\u00e2u n\u0103m<\/span> tuy nhi\u00ean<\/span> v\u1edbi nh\u1eefng binh l\u1ef1c<\/span> m\u1edbi th\u00ec \u0111\u00e2y l\u00e0<\/span> kh\u00e1i ni\u1ec7m c\u0103n b\u1ea3n<\/span> c\u1ea7n khai ph\u00e1<\/span> ngay. V\u00ec chi\u00eau tr\u00f2<\/span> t\u1ea1o \u0111\u01b0\u1ee3c<\/span> nh\u1eefng b\u1ed9 s\u1ed1 n\u00e0y th\u00ec v\u00f4 c\u00f9ng<\/span> \u0111\u00fang m\u1ef1c.<\/span> \u0110\u1ec3 l\u00e0m r\u00f5<\/span> h\u01a1n t\u1ea5t c\u1ea3 ch\u00fang ta<\/span> c\u1ea7n t\u00ecm hi\u1ec3u v\u00e0 kh\u00e1m ph\u00e1<\/span> t\u1ed5ng \u0111\u1ec1 l\u00e0 g\u00ec? c\u00f3 c\u00e1c<\/span> t\u1ed5ng \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng<\/span> n\u00e0o khi\u1ebfn cho b\u1ea1n<\/span> t\u00ecm th\u1ea5y c\u01a1 h\u1ed9i<\/span> \u0111\u1ed5i \u0111\u1eddi.<\/span><\/p>\n Th\u1eafc m\u1eafc<\/span> c\u1ee7a t\u01b0\u01a1ng \u0111\u1ed1i nhi\u1ec1u<\/span> b\u1ea1n b\u00e8<\/span> \u0111\u1eb7t ra<\/span> khi m\u1edbi ban \u0111\u1ea7u<\/span> t\u00ecm hi\u1ec3u v\u00e0 kh\u00e1m ph\u00e1<\/span> ngh\u00e0nh ngh\u1ec1 d\u1ecbch v\u1ee5<\/span> n\u00e0y. ch\u00fang ta c\u00f3 th\u1ec3<\/span> hi\u1ec3u n\u00f4m na, t\u1ed5ng \u0111\u1ec1 l\u00e0 ph\u00e9p t\u00ednh c\u1ed9ng \u0111\u1ed3ng lo\u1ea1t<\/span> s\u1ed1 l\u01b0\u1ee3ng<\/span> trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng<\/span> v\u1edbi nhau. c\u00e1ch t\u00ednh<\/span> t\u1ed5ng \u0111\u1ec1 n\u00e0y c\u0169ng nh\u01b0<\/span> t\u00ednh \u0111i\u1ec3m b\u00e0i ba c\u00e2y m\u00e0 ch\u00fang ta<\/span> th\u01b0\u1eddng ch\u01a1i. \u0110\u1ec3 n\u1eafm r\u00f5<\/span> h\u01a1n v\u1ec1 kh\u00e1i ni\u1ec7m n\u00e0y, b\u1ea1n h\u00e3y theo d\u00f5i v\u00ed d\u1ee5 sau \u0111\u00e2y:<\/span><\/p>\n \u0110\u1ec1 v\u1ec1 50: T\u1ed5ng hi\u1ec7n nay<\/span> \u0111\u01b0\u1ee3c xem l\u00e0<\/span> 5 (0 + 5)<\/span><\/p>\n \u0110\u1ec1 v\u1ec1 33: T\u1ed5ng hi\u1ec7n nay<\/span> \u0111\u01b0\u1ee3c xem l\u00e0<\/span> 6 (3 + 3)<\/span><\/p>\n \u0110\u1ec1 v\u1ec1 86: T\u1ed5ng l\u00fac n\u00e0y<\/span> \u0111\u01b0\u1ee3c xem l\u00e0<\/span> 4 (8 + 6 = 14)<\/span><\/p>\n \u0110\u1ec1 v\u1ec1 18: T\u1ed5ng l\u00fac n\u00e0y<\/span> s\u1ebd l\u00e0<\/span> 9 (1 + 8 = 11)<\/span><\/p>\n M\u1ed9t s\u1ed1<\/span> lo\u1ea1i t\u1ed5ng \u0111\u1ec1 c\u0103n b\u1ea3n<\/span> t\u1eeb 0 \u0111\u1ebfn 9 trong th\u1ef1c ti\u1ec5n<\/span> khi ph\u00e2n t\u00edch c\u00e1c<\/span> con s\u1ed1<\/span> t\u1eeb 00 \u0111\u1ebfn 99 ta c\u00f3 kh\u00f4ng \u00edt<\/span> lo\u1ea1i b\u1ed9 s\u1ed1 t\u1ed5ng \u0111\u1ec1. B\u1ea1n n\u00ean bi\u1ebft<\/span> th\u00eam 1 s\u1ed1<\/span> lo\u1ea1i t\u1ed5ng \u0111\u1ec1 c\u0103n b\u1ea3n<\/span> sau \u0111\u1ec3 hi\u1ec3u h\u01a1n v\u1ec1 t\u1ed5ng \u0111\u1ec1 l\u00e0 g\u00ec.<\/span><\/p>\n <\/p>\n T\u1eadp h\u1ee3p nh\u1eefng s\u1ed1 khi tri\u1ec3n khai<\/span> ph\u00e9p c\u1ed9ng gi\u1eefa hai s\u1ed1 th\u00ec c\u00f3 t\u1ed5ng b\u1eb1ng 0 ho\u1eb7c b\u1eb1ng 10 ta s\u1ebd ti\u1ebfn h\u00e0nh<\/span> d\u00e0n t\u1ed5ng \u0111\u1ec1 0. Theo ph\u01b0\u01a1ng ph\u00e1p t\u00ednh<\/span> n\u00e0y th\u00ec t\u1ed5ng \u0111\u1ec1 0 s\u1ebd g\u1ed3m c\u00f3<\/span> 10 s\u1ed1 \u0111\u00f3 l\u00e0: 00 \u2013 19 \u2013 91 \u2013 28 \u2013 82 \u2013 37 \u2013 73 \u2013 46 \u2013 64 \u2013 55.<\/span><\/p>\n T\u1ed5ng \u0111\u1ec1 1 ch\u1ee9a nh\u1eefng s\u1ed1 c\u00f3 t\u1ed5ng 2 \u0111\u01a1n v\u1ecb ch\u1ee9c n\u0103ng<\/span> c\u1ed9ng l\u1ea1i b\u1eb1ng 1 ho\u1eb7c 11. theo \u0111\u00f3<\/span> ta r\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng<\/span> thu\u1eadn ti\u1ec7n<\/span> t\u00ecm th\u1ea5y b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng 1 \u0111\u00f3 l\u00e0: 01, 10, 29, 92, 38, 83, 47, 74, 56, 65.<\/span><\/p>\n T\u1ef1 nh\u01b0<\/span> c\u00e1c<\/span> c\u00e1ch t\u00ednh<\/span> tr\u00ean th\u00ec \u0111\u1ec1 t\u1ed5ng 2 l\u00e0 nh\u1eefng con s\u1ed1<\/span> c\u00f3 t\u1ed5ng 2 ch\u1eef s\u1ed1 b\u1eb1ng 2 ho\u1eb7c 12. B\u1ed9 s\u1ed1 bao g\u1ed3m<\/span> nh\u1eefng<\/span> con s\u1ed1<\/span> \u0111\u00f3 l\u00e0: 02, 20, 11, 39, 93, 48, 84, 57, 75, 66.<\/span><\/p>\n T\u1ed5ng \u0111\u1ec1 3 bao h\u00e0m nh\u1eefng s\u1ed1 l\u01b0\u1ee3ng<\/span> c\u00f3 t\u1ed5ng \u0111\u1ec1 hai s\u1ed1 c\u1ed9ng l\u1ea1i b\u1eb1ng 3 ho\u1eb7c 13. nh\u01b0 th\u1ebf<\/span> nh\u1eefng<\/span> con s\u1ed1<\/span> trong t\u1eadp h\u1ee3p n\u00e0y l\u00e0: 03, 30, 12, 21,49, 94, 58, 85, 67, 76.<\/span><\/p>\n T\u1ed5ng \u0111\u1ec1 b\u1eb1ng 5 g\u1ed3m c\u00f3<\/span> nh\u1eefng<\/span> s\u1ed1 d\u1ea1ng t\u1ed5ng hai ch\u1eef s\u1ed1 b\u1eb1ng 15 ho\u1eb7c 5. c\u00e1c<\/span> s\u1ed1 l\u01b0\u1ee3ng<\/span> trong t\u1ed5ng \u0111\u1ec1 b\u1eb1ng 5 \u0111\u00f3 l\u00e0 78, 50, 14, 32, 69, 05, 41, 23, 96, 87.<\/span><\/p>\n D\u00e0n t\u1ed5ng \u0111\u1ec1 6 g\u1ed3m nh\u1eefng<\/span> con s\u1ed1<\/span> d\u1ea1ng t\u1ed5ng hai ch\u1eef s\u1ed1 b\u1eb1ng 16 ho\u1eb7c 6. c\u00e1c<\/span> con s\u1ed1<\/span> c\u1ee5 th\u1ec3<\/span> trong d\u00e0n t\u1ed5ng \u0111\u1ec1 b\u1eb1ng 6 \u0111\u00f3 l\u00e0 97, 60, 15, 42, 33, 06, 51, 24, 79, 88.<\/span><\/p>\n D\u00e0n t\u1ed5ng \u0111\u1ec1 7 g\u1ed3m nh\u1eefng<\/span> con s\u1ed1<\/span> d\u1ea1ng t\u1ed5ng hai ch\u1eef s\u1ed1 b\u1eb1ng 17 ho\u1eb7c 7. nh\u1eefng<\/span> con s\u1ed1<\/span> c\u1ee5 th\u1ec3<\/span> trong d\u00e0n t\u1ed5ng \u0111\u1ec1 b\u1eb1ng 7 \u0111\u00f3 l\u00e0 89, 70, 16, 52, 34, 07, 61, 25, 43, 98.<\/span><\/p>\n <\/p>\n \u0110\u1ec1 t\u1ed5ng 8 l\u00e0 d\u00e0n nh\u1eefng con s\u1ed1<\/span> c\u00f3 t\u1ed5ng 2 ch\u1eef s\u1ed1 c\u1ed9ng l\u1ea1i b\u1eb1ng 8 ho\u1eb7c 18. nh\u01b0 v\u1eady<\/span> t\u1ed5ng \u0111\u1ec1 8 s\u1ebd bao g\u1ed3m<\/span> nh\u1eefng<\/span> c\u1eb7p s\u1ed1 sau: 08 \u2013 80 \u2013 17 \u2013 71 \u2013 26 \u2013 62 \u2013 35 \u2013 53 \u2013 44 \u2013 99.<\/span><\/p>\n D\u00e0n t\u1ed5ng \u0111\u1ec1 9 g\u1ed3m nh\u1eefng<\/span> s\u1ed1 l\u01b0\u1ee3ng<\/span> d\u1ea1ng t\u1ed5ng hai ch\u1eef s\u1ed1 b\u1eb1ng 19 ho\u1eb7c 9. c\u00e1c<\/span> s\u1ed1 l\u01b0\u1ee3ng<\/span> c\u1ee5 th\u1ec3<\/span> trong d\u00e0n t\u1ed5ng \u0111\u1ec1 b\u1eb1ng 9 \u0111\u00f3 l\u00e0 45, 90, 18, 72, 36, 09, 81, 27, 63, 54.<\/span><\/p>\n 1 s\u1ed1<\/span> d\u00e0n \u0111\u1ec1 c\u00f3 t\u1ed5ng \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng<\/span> kh\u00e1c ,ngo\u00e0i nh\u1eefng<\/span> d\u00e0n s\u1ed1 c\u0103n b\u1ea3n<\/span> tr\u00ean th\u00ec c\u00f3 b\u1ed5 sung th\u00eam<\/span> nh\u1eefng<\/span> t\u1ed5ng \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng<\/span> c\u00e1c<\/span> t\u1ed5ng \u0111\u1ec1 sau \u0111\u00e2y<\/span> s\u1ebd gi\u00fap b\u1ea1n<\/span> hi\u1ec3u s\u00e2u xa<\/span> h\u01a1n v\u1ec1 t\u1ed5ng \u0111\u1ec1 l\u00e0 g\u00ec? khai ph\u00e1<\/span> ngay.<\/span><\/p>\n \u0110\u00e2y l\u00e0 d\u1ea1ng d\u00e0n \u0111\u1ec1 c\u00f3 t\u1ed5ng c\u1ee7a 2 ch\u1eef s\u1ed1 d\u01b0\u1edbi 10. V\u00ed d\u1ee5:<\/span><\/p>\n S\u1ed1 52 c\u00f3 t\u1ed5ng l\u00e0 5+2=7<10 n\u00ean \u0111\u00e2y s\u1ebd l\u00e0<\/span> con s\u1ed1<\/span> n\u1eb1m \u1edf trong<\/span> d\u00e0n \u0111\u1ec1 t\u1ed5ng d\u01b0\u1edbi 10.<\/span><\/p>\n S\u1ed1 96 c\u00f3 t\u1ed5ng l\u00e0 9+6=15>10 v\u1eady th\u00ec con s\u1ed1<\/span> n\u00e0y s\u1ebd kh\u00f4ng<\/span> n\u1eb1m \u1edf trong<\/span> d\u00e0n \u0111\u1ec1 t\u1ed5ng d\u01b0\u1edbi 10.<\/span><\/p>\n D\u00e0n \u0111\u1ec1 t\u1ed5ng d\u01b0\u1edbi 10 g\u1ed3m c\u00f3<\/span> 55 s\u1ed1 l\u01b0\u1ee3ng<\/span> kh\u00f4ng gi\u1ed1ng nhau<\/span> T\u1eeb ph\u01b0\u01a1ng ph\u00e1p t\u00ednh<\/span> tr\u00ean t\u1ea5t c\u1ea3 ch\u00fang ta<\/span> r\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng<\/span> d\u1ec5 d\u00e0ng<\/span> t\u00ednh \u0111\u01b0\u1ee3c c\u00e1c<\/span> s\u1ed1 l\u01b0\u1ee3ng<\/span> c\u00f3 t\u1ed5ng d\u01b0\u1edbi 10. theo \u0111\u00f3<\/span> d\u00e0n \u0111\u1ec1 n\u00e0y bao g\u1ed3m<\/span> c\u00e1c<\/span> s\u1ed1:<\/span><\/p>\n 00 \u2013 01 \u2013 02 \u2013 03 \u2013 04 \u2013 05 \u2013 06 \u2013 07 \u2013 08 \u2013 09<\/span><\/p>\n 10 \u2013 11 \u2013 12 \u2013 13 \u2013 14 \u2013 15 \u2013 16 \u2013 17 \u2013 18<\/span><\/p>\n 20 \u2013 21 \u2013 22 \u2013 23 \u2013 24 \u2013 25 \u2013 26 \u2013 27<\/span><\/p>\n 30 \u2013 31 \u2013 32 \u2013 33 \u2013 34 \u2013 35 \u2013 36<\/span><\/p>\n 40 \u2013 41 \u2013 42 \u2013 43 \u2013 44 \u2013 45<\/span><\/p>\n 50 \u2013 51 \u2013 52 \u2013 53 \u2013 54<\/span><\/p>\n 60 \u2013 61 \u2013 62 \u2013 63<\/span><\/p>\n 70 \u2013 71 \u2013 72<\/span><\/p>\n 80 \u2013 81<\/span><\/p>\n 90<\/span><\/p>\n <\/p>\n b\u1ea1n c\u1ea7n<\/span> l\u01b0u \u00fd<\/span> m\u1ed9t s\u1ed1 \u00edt<\/span> \u0111i\u1ec3m khi \u00e1p ch\u1ebf<\/span> d\u00e0n \u0111\u1ec1 t\u1ed5ng d\u01b0\u1edbi 10. D\u00e0n \u0111\u1ec1 \u0111\u00f3 \u0111\u01b0\u1ee3c<\/span> \u00e1p ch\u1ebf<\/span> khi t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/span> c\u1ee7a ch\u1ee7 nh\u1eadt v\u1ec1 d\u01b0\u1edbi 10. Ho\u1eb7c trong tr\u01b0\u1eddng h\u1ee3p<\/span> l\u1ea5y t\u1ed5ng \u0111\u1ec1 ng\u00e0y th\u1ee9 2<\/span> v\u1ec1 d\u01b0\u1edbi 10 \u0111\u1ec3 l\u00e0m<\/span> d\u00e0n \u0111\u1ec1 nu\u00f4i trong tu\u1ea7n \u0111\u00f3.<\/span><\/p>\n T\u1ed5ng \u0111\u1ec1 chia h\u1ebft cho 3 ch\u1ec9 \u0111\u01a1n thu\u1ea7n<\/span> l\u00e0 t\u1ed5ng c\u00e1c<\/span> ch\u1eef s\u1ed1 c\u00f3 th\u1ec3<\/span> chia \u0111\u01b0\u1ee3c cho 3. V\u00ed d\u1ef1 nh\u01b0 6\/3=2 ho\u1eb7c 18 c\u00f3 t\u1ed5ng b\u1eb1ng 9 chia h\u1ebft cho 3. Theo ho\u1ea1ch to\u00e1n<\/span> \u0111\u1ed3ng lo\u1ea1t<\/span> trong b\u1ed9 s\u1ed1 00 \u0111\u1ebfn 99 th\u00ec c\u00f3 34 c\u1eb7p s\u1ed1 th\u00ec t\u1ed5ng \u0111\u1ec1 chia h\u1ebft cho 3 g\u1ed3m: 00, 03, 06, 09,12,15,18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99.<\/span><\/p>\n B\u1ed9 \u0111\u1ec1 t\u1ed5ng chia 3 d\u01b0 1 c\u0169ng t\u01b0\u01a1ng t\u1ef1<\/span> t\u1ed5ng \u0111\u1ec1 chia h\u1ebft cho 3 th\u00ec t\u1ed5ng \u0111\u1ec1 chia 3 d\u01b0 1 t\u1ee9c l\u00e0<\/span> khi x\u00fac ti\u1ebfn<\/span> chia t\u1ed5ng nh\u1eefng<\/span> ch\u1eef s\u1ed1 cho 3 v\u00e0 d\u01b0 1 \u0111\u01a1n v\u1ecb<\/span> nh\u01b0 th\u1ebf<\/span> b\u1ed9 t\u1ed5ng \u0111\u1ec1 th\u1ecfa m\u00e3n nhu c\u1ea7u<\/span> y\u1ebfu t\u1ed1<\/span> n\u00e0y g\u1ed3m c\u00f3<\/span> 33 con s\u1ed1<\/span> \u0111\u00f3 l\u00e0: 01, 04, 07, 10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 61, 64, 67, 70, 73, 76, 79, 82, 85, 88, 91, 94, 97.<\/span><\/p>\n S\u1eed d\u1ee5ng t\u1ed5ng Pascal c\u1ee7a Newton \u0111\u1ec3 b\u1eaft t\u1ed5ng \u0111\u1ec1 sxmb \u0111\u00f3 ch\u00ednh l\u00e0<\/span> chi\u00eau th\u1ee9c<\/span> tuy\u1ec7t v\u1eddi nh\u1ea5t<\/span> gi\u00fap anh em<\/span> nghi\u00ean c\u1ee9u v\u00e0 \u0111i\u1ec1u tra<\/span> l\u00f4 \u0111\u1ec1 kh\u00e1 chu\u1ea9n, T\u1ed5ng \u0111\u1ec1 l\u00e0 g\u00ec?<\/span><\/h2>\n
Th\u00f4ng k\u00ea t\u1ed5ng \u0111\u1ec1 g\u1ed3m nh\u1eefng con g\u00ec?<\/span><\/h2>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 1<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 2<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 3<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 5<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 6<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 7<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 8 c\u00f3 bao nhi\u00eau con?<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 9<\/span><\/h3>\n
T\u1ed5ng 6 l\u00f4 \u0111\u1ec1 b\u1eb1ng 10<\/span><\/h3>\n
T\u1ed5ng \u0111\u1ec1 c\u00f3 bao nhi\u00eau con?<\/span><\/h2>\n
B\u1ed9 t\u1ed5ng \u0111\u1ec1 c\u1ea3 n\u0103m<\/span><\/h2>\n
H\u01b0\u1edbng d\u1eabn b\u1eaft t\u1ed5ng \u0111\u1ec1 SXMB theo tam gi\u00e1c Pascal<\/span><\/h3>\n