{"id":17561,"date":"2024-03-01T05:09:04","date_gmt":"2024-03-01T05:09:04","guid":{"rendered":"https:\/\/soicau5106.minhngocxoso.com\/du-doan-trung-thuong-hom-nay-so-de-hom-nay\/"},"modified":"2024-03-01T05:09:04","modified_gmt":"2024-03-01T05:09:04","slug":"dan-de-tong-chan-va-tong-le-la-gi-co-bao-nhieu-so-va-gom-nhung-so-nao","status":"publish","type":"post","link":"https:\/\/caulobachthu.com\/dan-de-tong-chan-va-tong-le-la-gi-co-bao-nhieu-so-va-gom-nhung-so-nao\/","title":{"rendered":"d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n v\u00e0 t\u1ed5ng l\u1ebb l\u00e0 g\u00ec, c\u00f3 bao nhi\u00eau s\u1ed1 v\u00e0 g\u1ed3m nh\u1eefng s\u1ed1 n\u00e0o?"},"content":{"rendered":"
D\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb l\u00e0 2 b\u1ed9 s\u1ed1 quen thu\u1ed9c c\u1ee7a nhi\u1ec1u b\u1ea1n ch\u01a1i l\u00f4 \u0111\u1ec1. Nh\u01b0ng d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb l\u00e0 g\u00ec? C\u00f3 bao nhi\u00eau con? D\u00e0n \u0111\u1ec3 t\u1ed5ng ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb g\u1ed3m nh\u1eefng con n\u00e0o. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00e0 n\u1ed9i dung b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, m\u1eddi c\u00e1c b\u1ea1n \u0111\u1ecdc ti\u1ebfp.<\/p>\n
<\/p>\n
D\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n g\u1ed3m nh\u1eefng s\u1ed1 c\u00f3 t\u1ed5ng 2 ch\u1eef s\u1ed1 l\u00e0 s\u1ed1 ch\u1eb5n (chia h\u1ebft cho 2). C\u00e1c b\u1ea1n c\u0169ng \u0111\u00e3 bi\u1ebft t\u1ed5ng 2 l\u00e0 s\u1ed1 ch\u1eb5n khi m\u00e0 2 s\u1ed1 c\u00f9ng l\u00e0 s\u1ed1 l\u1ebb ho\u1eb7c 2 s\u1ed1 c\u00f9ng l\u00e0 s\u1ed1 ch\u1eb5n.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
S\u1ed1 3 v\u00e0 s\u1ed1 5 l\u00e0 s\u1ed1 l\u1ebb n\u00ean t\u1ed5ng c\u1ee7a 2 s\u1ed1 b\u1eb1ng 8 l\u00e0 s\u1ed1 ch\u1eb5n<\/p>\n
S\u1ed1 4 v\u00e0 s\u1ed1 8 l\u00e0 s\u1ed1 ch\u1eb5n n\u00ean t\u1ed5ng c\u1ee7a 2 b\u1eb1ng 12 l\u00e0 s\u1ed1 ch\u1eb5n<\/p>\n
Nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf ph\u1ea7n tr\u00ean. D\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n l\u00e0 b\u1ed9 s\u1ed1 c\u00f3 2 ch\u1eef s\u1ed1 l\u00e0 s\u1ed1 ch\u1eb5n ho\u1eb7c 2 s\u1ed1 l\u00e0 s\u1ed1 l\u1ebb. V\u00ec v\u1eady n\u00f3 g\u1ed3m nh\u1eefng s\u1ed1 c\u1ee7a 2 d\u00e0n \u0111\u1ec1 ch\u1eb5n ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 l\u1ebb l\u1ebb.<\/p>\n
Nh\u01b0 v\u1eady n\u00f3 c\u00f3 50 s\u1ed1 v\u00e0 g\u1ed3m nh\u1eefng s\u1ed1 sau:<\/p>\n
11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 75, 77, 79, 91, 93, 95, 97, 99<\/p>\n
00, 02, 04, 06, 08, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88<\/p>\n
<\/p>\n
T\u01b0\u01a1ng t\u1ef1 nh\u01b0 d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n. D\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb l\u00e0 b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng 2 ch\u1eef s\u1ed1 kh\u00f4ng chia h\u1ebft cho 2. Trong to\u00e1n h\u1ecdc th\u00ec t\u1ed5ng c\u1ee7a 2 s\u1ed1 l\u00e0 s\u1ed1 l\u1ebb khi 2 s\u1ed1 \u0111\u00f3 l\u00e0 1 s\u1ed1 ch\u1eb5n v\u00e0 1 s\u1ed1 l\u1ebb.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
S\u1ed1 7 v\u00e0 s\u1ed1 8 l\u00e0 c\u00f3 t\u1ed5ng 2 s\u1ed1 b\u1eb1ng 15 l\u00e0 s\u1ed1 l\u1ebb<\/p>\n
S\u1ed1 2 v\u00e0 s\u1ed1 9 c\u00f3 t\u1ed5ng 2 s\u1ed1 l\u00e0 11 l\u00e0 s\u1ed1 l\u1ebb<\/p>\n
Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n. D\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb bao g\u1ed3m 2 d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb v\u00e0 l\u1ebb ch\u1eb5n. D\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb g\u1ed3m 50 s\u1ed1 sau:<\/p>\n
01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/p>\n
10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98<\/p>\n
Tr\u00ean \u0111\u00e2y l\u00e0 to\u00e0n b\u1ed9 ki\u1ebfn th\u1ee9c v\u1ec1 d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb. Ch\u00fac c\u00e1c b\u1ea1n ch\u01a1i l\u00f4 \u0111\u1ec1 \u00e1p d\u1ee5ng th\u00e0nh c\u00f4ng v\u00e0 may m\u1eafn.<\/p>\n
SOI C\u1ea6U CH\u00cdNH X\u00c1C B\u1ea0CH TH\u1ee6 L\u00d4 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C B\u1ea0CH TH\u1ee6 L\u00d4 2 NH\u00c1Y MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C SONG TH\u1ee6 L\u00d4 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C B\u1ea0CH TH\u1ee6 L\u00d4 K\u00c9P MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C SONG TH\u1ee6 L\u00d4 K\u00c9P MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C B\u1ea0CH TH\u1ee6 \u0110\u1ec0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C SONG TH\u1ee6 \u0110\u1ec0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N \u0110\u1ec0 4 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N \u0110\u1ec0 6 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N \u0110\u1ec0 8 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N \u0110\u1ec0 10 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 4 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 6 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 8 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 XI\u00caN 2 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 XI\u00caN 3 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 XI\u00caN 4 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C 3 C\u00c0NG MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N 3 C\u00c0NG 2 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C D\u00c0N L\u00d4 10 S\u1ed0 MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C \u0110\u1ea6U \u0110U\u00d4I MB<\/span><\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C X\u1ec9u Ch\u1ee7 MN<\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C GI\u1ea2I \u0110\u1eb6C BI\u1ec6T MN<\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C GI\u1ea2I 8 MN<\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C BAO L\u00d4 MN<\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C C\u1eb6P X\u1ec9u Ch\u1ee7 MN<\/span><\/span><\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C SONG TH\u1ee6 L\u00d4 MN<\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C \u0110\u1ea6U \u0110U\u00d4I GI\u1ea2I 8 MN<\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C \u0110\u1ea6U \u0110U\u00d4I \u0110\u1eb6C BI\u1ec6T MN<\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C L\u00d4 3 S\u1ed0 MN<\/span><\/span><\/strong><\/a><\/p>\n SOI C\u1ea6U CH\u00cdNH X\u00c1C X\u1ec9u Ch\u1ee7 MT<\/span><\/span><\/span><\/strong><\/a><\/p>\nSOI C\u1ea6U CH\u1ed0T S\u1ed0 MI\u1ec0N B\u1eaeC<\/span><\/span><\/span><\/h3>\n
\n SOI C\u1ea6U CH\u1ed0T S\u1ed0 MI\u1ec0N NAM<\/span><\/span><\/span><\/span><\/span><\/h3>\n
\n SOI C\u1ea6U CH\u1ed0T S\u1ed0 MI\u1ec0N TRUNG<\/span><\/span><\/span><\/h3>\n
\n