{"id":362,"date":"2024-05-10T08:39:38","date_gmt":"2024-05-10T01:39:38","guid":{"rendered":"https:\/\/\/?p=362"},"modified":"2024-05-28T18:03:36","modified_gmt":"2024-05-28T11:03:36","slug":"3-cach-soi-cau-lap-dan-de-38-so-chuan-xac-bat-bai","status":"publish","type":"post","link":"https:\/\/\/3-cach-soi-cau-lap-dan-de-38-so-chuan-xac-bat-bai\/","title":{"rendered":"B\u1eadt m\u00ed 3 c\u00e1ch soi c\u1ea7u l\u1eadp d\u00e0n \u0111\u1ec1 38 s\u1ed1 chu\u1ea9n x\u00e1c, b\u1ea5t b\u1ea1i"},"content":{"rendered":"\n

Trong th\u1ebf gi\u1edbi l\u00f4 \u0111\u1ec1, vi\u1ec7c ch\u1ecdn m\u1ed9t d\u00e0n \u0111\u1ec1 v\u1edbi b\u1ed9 s\u1ed1 chu\u1ea9n l\u00e0 ch\u00eca kh\u00f3a d\u1eabn \u0111\u1ebfn chi\u1ebfn th\u1eafng l\u1edbn. V\u1edbi kinh nghi\u1ec7m l\u00e2u n\u0103m trong l\u0129nh v\u1ef1c n\u00e0y, ch\u00fang t\u00f4i<\/a> xin chia s\u1ebb nh\u1eefng b\u00ed quy\u1ebft ch\u1ecdn <\/em>d\u00e0n \u0111\u1ec1 38 s\u1ed1<\/a><\/em><\/strong> c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3, gi\u00fap t\u0103ng c\u01a1 h\u1ed9i tr\u00fang th\u01b0\u1edfng.<\/em><\/p>\n\n\n\n

\"\u0110\u00e1nh<\/figure>\n\n\n\n

\u0110\u00e1nh theo d\u00e0n \u0111\u1ec1 38 s\u1ed1 hi\u1ec7n l\u00e0 c\u00e1ch ch\u01a1i \u0111\u01b0\u1ee3c nhi\u1ec1u l\u00f4 th\u1ee7 \u00e1p d\u1ee5ng<\/em><\/p>\n\n\n\n

T\u00ecm hi\u1ec3u d\u00e0n \u0111\u1ec1 38 s\u1ed1 ngh\u0129a l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n

D\u00e0n \u0111\u1ec1 38 s\u1ed1 l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng g\u1ed3m 38 b\u1ed9 s\u1ed1 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u1eeb d\u00e3y s\u1ed1 00 \u0111\u1ebfn 99. Nh\u1eefng con s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c tuy\u1ec3n ch\u1ecdn m\u1ed9t c\u00e1ch khoa h\u1ecdc d\u1ef1a tr\u00ean c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch v\u00e0 s\u00e0ng l\u1ecdc k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1, gi\u00fap t\u0103ng c\u01a1 h\u1ed9i tr\u00fang th\u01b0\u1edfng.<\/p>\n\n\n\n

V\u1edbi d\u00e0n 38 s\u1ed1, ng\u01b0\u1eddi ch\u01a1i c\u00f3 th\u1ec3 \u0111\u00e1nh \u0111\u1ed3ng th\u1eddi nhi\u1ec1u b\u1ed9 s\u1ed1 kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng b\u1eaft \u0111\u01b0\u1ee3c s\u1ed1 may m\u1eafn xu\u1ea5t hi\u1ec7n trong k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1. Tuy nhi\u00ean, v\u00ec s\u1ed1 l\u01b0\u1ee3ng b\u1ed9 s\u1ed1 l\u1edbn, n\u00ean ng\u01b0\u1eddi ch\u01a1i c\u1ea7n ph\u1ea3i v\u00e0o ti\u1ec1n theo m\u1ed9t t\u1ef7 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng, v\u1edbi d\u00e0n 38 s\u1ed1, ng\u01b0\u1eddi ta khuy\u1ebfn ngh\u1ecb n\u00ean v\u00e0o ti\u1ec1n theo c\u00f4ng th\u1ee9c 1:2:4, ngh\u0129a l\u00e0 v\u1edbi 38 b\u1ed9 s\u1ed1, b\u1ea1n s\u1ebd v\u00e0o ti\u1ec1n theo t\u1ef7 l\u1ec7 t\u01b0\u01a1ng \u1ee9ng 1 ph\u1ea7n, 2 ph\u1ea7n v\u00e0 4 ph\u1ea7n. C\u00f4ng th\u1ee9c n\u00e0y \u0111\u01b0\u1ee3c xem l\u00e0 ph\u00f9 h\u1ee3p v\u00e0 an to\u00e0n nh\u1ea5t \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a c\u01a1 h\u1ed9i tr\u00fang gi\u1ea3i m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o qu\u1ef9 v\u1ed1n h\u1ee3p l\u00fd. Ngo\u00e0i ra, \u0111\u1ec3 t\u0103ng th\u00eam kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng, ng\u01b0\u1eddi ch\u01a1i n\u00ean nu\u00f4i khung d\u00e0n \u0111\u1ec1 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, th\u01b0\u1eddng l\u00e0 3 \u0111\u1ebfn 5 ng\u00e0y.<\/p>\n\n\n\n

\"D\u00e0n<\/figure>\n\n\n\n

D\u00e0n \u0111\u1ec1 b\u1ed9 38 s\u1ed1 l\u00e0 c\u00e1ch ch\u01a1i gi\u00fap b\u1ea1n c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang cao h\u01a1n<\/em><\/p>\n\n\n\n

\n

Xem th\u00eam: M\u01a1 th\u1ea5y chi\u1ebfn tranh l\u00e0 \u0111i\u1ec1m b\u00e1o g\u00ec? \u0110\u00e1nh con g\u00ec d\u1ec5 tr\u00fang nh\u1ea5t<\/a><\/p>\n<\/blockquote>\n\n\n\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u d\u00e0n \u0111\u1ec1 38 s\u1ed1 b\u1ea5t b\u1ea1i<\/strong><\/h2>\n\n\n\n

Soi c\u1ea7u d\u1ef1a v\u00e0o t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t nh\u1ecf h\u01a1n 10<\/em><\/strong><\/h3>\n\n\n\n

D\u1ef1a v\u00e0o nguy\u00ean t\u1eafc “Khi t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t nh\u1ecf h\u01a1n 10”, ch\u00fang ta c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u \u0111\u1ec3 l\u1ecdc ra d\u00e0n \u0111\u1ec1 38 s\u1ed1 ph\u00f9 h\u1ee3p nh\u01b0 sau:<\/p>\n\n\n\n

B\u01b0\u1edbc 1: T\u1ea1o ra danh s\u00e1ch c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng nh\u1ecf h\u01a1n 10<\/p>\n\n\n\n

T\u1eeb d\u00e3y s\u1ed1 00 \u0111\u1ebfn 99, ta l\u1ecdc ra c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 nh\u1ecf h\u01a1n 10, nh\u01b0: 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12,…80, 81,…90.<\/p>\n\n\n\n

B\u01b0\u1edbc 2: Ph\u00e2n t\u00edch k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 g\u1ea7n \u0111\u00e2y<\/p>\n\n\n\n

Nghi\u00ean c\u1ee9u k\u1ef9 c\u00e1c k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 \u0111\u00e3 v\u1ec1 trong th\u1eddi gian g\u1ea7n \u0111\u00e2y (kho\u1ea3ng 2-4 tu\u1ea7n) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xu h\u01b0\u1edbng c\u1ee7a nh\u1eefng con s\u1ed1 may m\u1eafn.<\/p>\n\n\n\n

B\u01b0\u1edbc 3: L\u1ecdc d\u00e0n \u0111\u1ec1 38 s\u1ed1<\/p>\n\n\n\n

T\u1eeb danh s\u00e1ch c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng nh\u1ecf h\u01a1n 10 \u1edf b\u01b0\u1edbc 1, ta ch\u1ecdn ra 38 b\u1ed9 s\u1ed1 ph\u00f9 h\u1ee3p nh\u1ea5t d\u1ef1a tr\u00ean xu h\u01b0\u1edbng t\u1eeb b\u01b0\u1edbc 2. \u01afu ti\u00ean nh\u1eefng b\u1ed9 s\u1ed1 \u0111\u00e3 xu\u1ea5t hi\u1ec7n nhi\u1ec1u l\u1ea7n ho\u1eb7c c\u00f3 d\u1ea5u hi\u1ec7u s\u1ebd quay tr\u1edf l\u1ea1i.<\/p>\n\n\n\n

\n

Xem th\u00eam: Kinh nghi\u1ec7m th\u1ee9 7 \u0111\u00e1nh con g\u00ec d\u1ec5 tr\u00fang<\/a><\/p>\n<\/blockquote>\n\n\n\n

C\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 b\u1ed9 38 s\u1ed1 d\u1ef1a v\u00e0o t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1edbn h\u01a1n 10<\/em><\/strong><\/h3>\n\n\n\n

C\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 38 s\u1ed1 khi t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1edbn h\u01a1n 10 nh\u01b0 sau:<\/p>\n\n\n\n

B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh t\u1ed5ng c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/p>\n\n\n\n

Gi\u1ea3 s\u1eed gi\u1ea3i \u0111\u1eb7c bi\u1ec7t h\u00f4m nay l\u00e0 15284, t\u1ed5ng c\u1ee7a 84 l\u00e0 10 (8 + 4 = 12).<\/p>\n\n\n\n

B\u01b0\u1edbc 2: T\u1ea1o danh s\u00e1ch b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng l\u1edbn h\u01a1n 10<\/p>\n\n\n\n

T\u1eeb d\u00e3y s\u1ed1 00-99, l\u1ecdc ra c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng c\u00e1c ch\u1eef s\u1ed1 l\u1edbn h\u01a1n 10 nh\u01b0: 11, 12, 13,…, 21,…,98, 99.<\/p>\n\n\n\n

B\u01b0\u1edbc 3: Ch\u1ecdn d\u00e0n 38 s\u1ed1 t\u1eeb danh s\u00e1ch tr\u00ean<\/p>\n\n\n\n

\u01afu ti\u00ean ch\u1ecdn c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u1ed5ng b\u1eb1ng t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. V\u00ed d\u1ee5: 39, 48, 57, 66, 75, 84, 93. Ti\u1ebfp t\u1ee5c ch\u1ecdn c\u00e1c b\u1ed9 s\u1ed1 kh\u00e1c c\u00f3 t\u1ed5ng l\u1edbn h\u01a1n 10 d\u1ef1a tr\u00ean ph\u00e2n t\u00edch xu h\u01b0\u1edbng k\u1ebft qu\u1ea3 g\u1ea7n \u0111\u00e2y. C\u00f3 th\u1ec3 tham kh\u1ea3o ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u l\u00f4 gan, l\u00f4 r\u01a1i \u0111\u1ec3 ch\u1ecdn cho \u0111\u1ee7 b\u1ed9 38 s\u1ed1 ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n

\"C\u00e1ch<\/figure>\n\n\n\n

C\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 d\u1ef1a t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1edbn h\u01a1n 10 \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi \u00e1p d\u1ee5ng<\/em><\/p>\n\n\n\n

T\u1ea1o d\u00e0n \u0111\u1ec1 38 s\u1ed1 b\u1eb1ng t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/em><\/strong><\/h3>\n\n\n\n

M\u1ed9t c\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 38 s\u1ed1 kh\u00e1 th\u00fa v\u1ecb l\u00e0 d\u1ed3n t\u1ed5ng c\u1ee7a c\u00e1c con s\u1ed1 trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00e1 \u0111\u01a1n gi\u1ea3n nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o t\u00ednh khoa h\u1ecdc v\u00e0 logic \u0111\u1ec3 t\u0103ng c\u01a1 h\u1ed9i tr\u00fang th\u01b0\u1edfng. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n\n\n\n

B\u01b0\u1edbc 1: T\u00ednh t\u1ed5ng c\u1ee7a 5 s\u1ed1 trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/p>\n\n\n\n

V\u00ed d\u1ee5 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 15284, t\u1ed5ng 5 s\u1ed1 1 + 5 + 2 + 8 + 4 = 20<\/p>\n\n\n\n

B\u01b0\u1edbc 2: T\u1ea1o c\u1ea7u ch\u1ea1m chu\u1ea9n t\u1eeb t\u1ed5ng \u0111\u00f3<\/p>\n\n\n\n

D\u1ef1a v\u00e0o t\u1ed5ng 20 v\u1eeba t\u00ednh \u0111\u01b0\u1ee3c, ta s\u1ebd t\u1ea1o c\u00e1c s\u1ed1 c\u00f3 t\u1ed5ng b\u1eb1ng 20 nh\u01b0: 20, 19, 91, 28, 82, 37, 73, 64, 46, 55. \u0110\u1ed3ng th\u1eddi gh\u00e9p c\u00e1c c\u1ea7u ch\u1ea1m \u0111\u1ec3 t\u1ea1o d\u00e0n 38 s\u1ed1 v\u00ed d\u1ee5 21, 22,\u2026 29 v\u00e0 00,… 09. Sau \u0111\u00f3 ti\u1ebfp t\u1ee5c soi c\u1ea7u l\u00f4 gan, l\u00f4 r\u01a1i \u0111\u1ec3 b\u1ed5 sung \u0111\u1ed5 b\u1ed9 s\u1ed1 v\u00e0 b\u1eaft \u0111\u1ea7u c\u00e1 c\u01b0\u1ee3c trong v\u00f2ng 3-5 ng\u00e0y.<\/p>\n\n\n\n

\n

Xem th\u00eam: Soi c\u1ea7u ng\u0169 h\u00e0nh l\u00e0 g\u00ec? Hi\u1ec3u r\u00f5 c\u00e1ch xem l\u00f4 \u0111\u1ec1 qua ng\u0169 h\u00e0nh<\/a><\/p>\n<\/blockquote>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh d\u00e0n \u0111\u1ec1 38 s\u1ed1 khi c\u1ea7n thi\u1ebft cho ph\u00f9 h\u1ee3p<\/strong><\/h2>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh d\u00e0n \u0111\u1ec1 38 s\u1ed1 l\u00e0 vi\u1ec7c c\u1ea7n thi\u1ebft \u0111\u1ea3m b\u1ea3o d\u00e0n \u0111\u1ec1 lu\u00f4n ph\u00f9 h\u1ee3p v\u1edbi xu h\u01b0\u1edbng m\u1edbi nh\u1ea5t c\u1ee7a k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1. Sau m\u1ed9t th\u1eddi gian nu\u00f4i khung, n\u1ebfu nh\u1eadn th\u1ea5y d\u00e0n \u0111\u1ec1 hi\u1ec7n t\u1ea1i kh\u00f4ng c\u00f2n hi\u1ec7u qu\u1ea3, b\u1ea1n n\u00ean xem x\u00e9t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng tr\u00fang th\u01b0\u1edfng.<\/p>\n\n\n\n

\"B\u1ea1n<\/figure>\n\n\n\n

B\u1ea1n n\u00ean \u0111i\u1ec1u ch\u1ec9nh d\u00e0n \u0111\u1ec1 khi c\u1ea7n thi\u1ebft \u0111\u1ec3 gia t\u0103ng hi\u1ec7u qu\u1ea3<\/em><\/p>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh c\u00f3 th\u1ec3 bao g\u1ed3m thay \u0111\u1ed5i m\u1ed9t s\u1ed1 b\u1ed9 s\u1ed1 trong d\u00e0n, ho\u1eb7c th\u1eadm ch\u00ed thay \u0111\u1ed5i to\u00e0n b\u1ed9 d\u00e0n \u0111\u1ec1 n\u1ebfu th\u1ea5y c\u1ea7n thi\u1ebft. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u00f2i h\u1ecfi b\u1ea1n ph\u1ea3i theo d\u00f5i s\u00e1t sao c\u00e1c k\u1ebft qu\u1ea3 m\u1edbi nh\u1ea5t, ph\u00e2n t\u00edch xu h\u01b0\u1edbng v\u00e0 quy lu\u1eadt c\u1ee7a c\u00e1c con s\u1ed1 may m\u1eafn.<\/p>\n\n\n\n

Ngo\u00e0i ra, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 tham kh\u1ea3o \u00fd ki\u1ebfn c\u1ee7a c\u00e1c chuy\u00ean gia, cao th\u1ee7 trong l\u00e0ng \u0111\u1ec1 \u0111\u1ecf \u0111\u1ec3 c\u00f3 nh\u1eefng \u0111\u00e1nh gi\u00e1, t\u01b0 v\u1ea5n ch\u00ednh x\u00e1c h\u01a1n. K\u1ebft h\u1ee3p kinh nghi\u1ec7m b\u1ea3n th\u00e2n v\u00e0 \u00fd ki\u1ebfn c\u1ee7a nh\u1eefng ng\u01b0\u1eddi \u0111i tr\u01b0\u1edbc s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec1u ch\u1ec9nh d\u00e0n \u0111\u1ec1 ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n\n\n\n

Tuy nhi\u00ean, kh\u00f4ng n\u00ean thay \u0111\u1ed5i d\u00e0n \u0111\u1ec1 38 s\u1ed1 qu\u00e1 th\u01b0\u1eddng xuy\u00ean v\u00ec \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y l\u00e3ng ph\u00ed ti\u1ec1n b\u1ea1c. H\u00e3y ki\u00ean nh\u1eabn v\u00e0 ch\u1ec9 \u0111i\u1ec1u ch\u1ec9nh khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft. M\u1ed9t d\u00e0n \u0111\u1ec1 t\u1ed1t c\u1ea7n th\u1eddi gian \u0111\u1ec3 ch\u1ee9ng minh hi\u1ec7u qu\u1ea3 c\u1ee7a n\u00f3.<\/p>\n\n\n\n

\n

Xem th\u00eam:<\/p>\n\n\n\n

\n
B\u1ed9 s\u1ed1 l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec? C\u00e1ch t\u00ecm c\u00e1c b\u1ed9 s\u1ed1 l\u00f4 \u0111\u1ec1 d\u1ec5 tr\u00fang nh\u1ea5t\u00a0<\/a><\/blockquote>