{"id":18526,"date":"2024-04-21T06:41:50","date_gmt":"2024-04-21T06:41:50","guid":{"rendered":"https:\/\/soicau1120.minhngocxoso.com\/?p=18526"},"modified":"2024-04-21T06:41:50","modified_gmt":"2024-04-21T06:41:50","slug":"phuong-phap-tinh-va-soi-cau-dan-de-khong-chia-het-cho-3-chuan","status":"publish","type":"post","link":"https:\/\/laycau3mien.com\/phuong-phap-tinh-va-soi-cau-dan-de-khong-chia-het-cho-3-chuan\/","title":{"rendered":"Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh v\u00e0 soi c\u1ea7u d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 chu\u1ea9n"},"content":{"rendered":"
Ti\u1ebfp theo l\u00e0 chia s\u1ebb nh\u1eefng c\u00e1ch hi\u1ec7u qu\u1ea3 khi ph\u00e2n th\u00edch theo d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3.<\/p>\n
Nh\u1eefng th\u00f4ng tin tr\u00ean \u0111\u00e3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 s\u1ebd l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3.<\/p>\n
Th\u1ebf n\u00ean \u0111\u00e2y c\u0169ng l\u00e0 c\u00e1ch ch\u01a1i ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng ng\u01b0\u1eddi th\u00edch r\u00e0o d\u00e0n \u0111\u1ec1 nhi\u1ec1u con s\u1ed1, ch\u1ea5p nh\u1eadn vi\u1ec7c m\u1ee9c l\u1ee3i nhu\u1eadn c\u00f3 \u0111\u01b0\u1ee3c s\u1ebd th\u1ea5p h\u01a1n v\u00e0 thay v\u00e0o \u0111\u00f3 l\u00e0 t\u1ec9 l\u1ec7 chi\u1ebfn th\u1eafng s\u1ebd cao h\u01a1n.<\/p>\n
Theo c\u00e1ch n\u00e0y ta s\u1ebd chia d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 ra th\u00e0nh 3 t\u1eadp s\u1ed1 bao g\u1ed3m:<\/p>\n
D\u00e0n \u0111\u1ec1 s\u1ed1 nh\u1ecf: 00, 01, 02, 04, 05, 07, 08, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 28, 29, 31.<\/p>\n
D\u00e0n \u0111\u1ec1 s\u1ed1 gi\u1eefa: 32, 34, 36, 37, 39, 40, 43, 44, 46, 47, 49, 50, 52, 53, 55, 56, 58, 59, 61, 62, 64, 67, 67, 70.<\/p>\n
D\u00e0n \u0111\u1ec1 s\u1ed1 l\u1edbn: 72, 73, 74, 76, 77, 79, 80, 82, 83, 85, 86, 88, 89, 91, 92, 94, 95, 96, 98.<\/p>\n
Nh\u01b0 v\u1eady d\u00e0n \u0111\u1ec1 nh\u1ecf cho gi\u00e1 tr\u1ecb t\u1eeb 00 – 31, 32 – 70 l\u00e0 d\u00e0n \u0111\u1ec1 gi\u1eefa v\u00e0 c\u00f2n l\u1ea1i t\u1eeb 72 – 98 l\u00e0 d\u00e0n \u0111\u1ec1 s\u1ed1 l\u1edbn. C\u00e1c b\u1ea1n h\u00e3y xem 2 con s\u1ed1 \u0111\u1ea7u ti\u00ean c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t phi\u00ean g\u1ea7n nh\u1ea5t xu\u1ea5t hi\u1ec7n con \u0111\u1ec1 trong gi\u00e1 tr\u1ecb n\u00e0o v\u00e0 ch\u1ecdn theo d\u00e0n \u0111\u1ec1 \u0111\u00f3.<\/p>\n
C\u00e1ch th\u1ef1c hi\u1ec7n t\u01b0\u01a1ng t\u1ef1 nh\u01b0 d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 m\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 gi\u1edbi thi\u1ec7u tr\u00ean. N\u1ebfu t\u1ed5ng \u0111\u1ec1 l\u00e0 con s\u1ed1 c\u00f3 gi\u00e1 tr\u1ecb kh\u00f4ng chia h\u1ebft cho 3 th\u00ec c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1ch n\u00e0y.<\/p>\n
<\/p>\n
C\u00f3 \u0111\u1ebfn 68 con \u0111\u1ec1 c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn n\u00ean vi\u1ec7c ch\u1ecdn d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 c\u0169ng s\u1ebd c\u00f3 nhi\u1ec1u c\u00e1ch. C\u00e1ch m\u00e0 ch\u00fang t\u00f4i gi\u1edbi thi\u1ec7u s\u1ebd ph\u00f9 h\u1ee3p v\u1edbi ng\u01b0\u1eddi ch\u01a1i m\u1edbi l\u00e0m quen v\u1edbi vi\u1ec7c soi c\u1ea7u. Nh\u01b0ng \u0111i\u1ec1u th\u00fa v\u1ecb l\u00e0 n\u00f3 v\u1eabn c\u00f3 \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t cao th\u00e0nh c\u00f4ng v\u00e0 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi nh\u1eefng cao th\u1ee7.<\/p>\n
C\u00e1ch b\u1eaft c\u1ea7u \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 r\u1ea5t \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u1edf \u0111\u00e0i mi\u1ec1n B\u1eafc. Nh\u1eefng v\u1ecb tr\u00ed t\u1ea1o c\u1ea7u l\u00e0 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 2 k\u1ebft qu\u1ea3 cu\u1ed1i c\u1ee7a gi\u1ea3i 7 l\u00e0 7.3 v\u00e0 7.4.<\/p>\n
L\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i sang ph\u1ea3i trong 5 con s\u1ed1 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, c\u00e1c b\u1ea1n h\u00e3y th\u1ef1c hi\u1ec7n gh\u00e9p \u0111\u00f4i l\u1ea7n l\u01b0\u1ee3t v\u1edbi t\u1ea5t c\u1ea3 4 con s\u1ed1 c\u1ee7a 2 gi\u1ea3i 7, gh\u00e9p \u0111\u00f4i c\u00f3 k\u1ebft qu\u1ea3 n\u00e0o kh\u00f4ng chia h\u1ebft cho 3 th\u00ec \u0111\u00f3 l\u00e0 con \u0111\u1ec1 \u0111\u01b0\u1ee3c ch\u1ecdn trong d\u00e0n \u0111\u1ec1 n\u00e0y.<\/p>\n
V\u00ed d\u1ee5: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t c\u00f3 c\u00e1c con s\u1ed1 1, 4, 6, 2, 8 v\u00e0 2 gi\u1ea3i 7.3, 7.4 c\u00f3 c\u00e1c con s\u1ed1 1, 4, 6, 9. Ta s\u1ebd c\u00f3 \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 t\u1eeb tr\u01b0\u1eddng h\u1ee3p n\u00e0y bao g\u1ed3m: 11, 14, 16, 19, 41, 44, 46, 49, 26, 29, 96, 89.<\/p>\n
\u0110i k\u00e8m v\u1edbi nh\u1eefng th\u00f4ng tin gi\u1ea3i \u0111\u00e1p th\u1eafc m\u1eafc \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ch\u01a1i c\u00f2n xa l\u1ea1 v\u1edbi d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 l\u00e0 nh\u1eefng c\u00e1ch r\u1ea5t hay gi\u00fap c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm ra \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111i\u1ec1u th\u00fa v\u1ecb khi ph\u00e2n t\u00edch soi c\u1ea7u theo d\u1ea1ng d\u00e0n \u0111\u1ec1 n\u00e0y.<\/p>\n