L\u00f4 \u0111ang l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh th\u1ee9c c\u00e1 c\u01b0\u1ee3c \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u anh em theo \u0111\u1ed5i hi\u1ec7n nay. Nh\u1ea5t l\u00e0 c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111em l\u1ea1i cho anh em m\u1ed9t s\u1ed1 ti\u1ec1n th\u01b0\u1edfng v\u00f4 c\u00f9ng l\u1edbn. Nh\u01b0ng nhi\u1ec1u anh em hi\u1ec7n nay, d\u00f9 l\u00e0 m\u1edbi ch\u01a1i hay \u0111\u00e3 ch\u01a1i l\u00e2u v\u1eabn ch\u01b0a bi\u1ebft c\u00e1ch t\u00ednh nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n
T\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/strong><\/span><\/h2>\nTr\u01b0\u1edbc khi c\u00e1c anh em mu\u1ed1n bi\u1ebft \u0111\u01b0\u1ee3c c\u00e1ch t\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t th\u00ec anh em ph\u1ea3i hi\u1ec3u \u0111\u01b0\u1ee3c chi ti\u1ebft v\u1ec1 l\u00f4 r\u01a1i. V\u00e0 anh em ph\u1ea3i bi\u1ebft c\u00e1ch b\u1eaft l\u00f4 r\u01a1i<\/strong>. T\u1eeb \u0111\u00f3 anh em s\u1ebd v\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c c\u00e1ch t\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c m\u1ed9t c\u00e1ch v\u00f4 c\u00f9ng d\u1ec5 d\u00e0ng.<\/p>\nC\u00e1ch t\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng n\u00f3 l\u1ea1i \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 c\u1ef1c k\u1ef3 cao. C\u00e1ch t\u00ednh kh\u00f4ng c\u00f3 g\u00ec l\u00e0 qu\u00e1 kh\u00f3. Anh em ch\u1ec9 c\u1ea7n \u0111\u1ec3 \u00fd v\u00e0 quan s\u00e1t k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 m\u1ed9t ch\u00fat l\u00e0 c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c con l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t.<\/p>\n![\"tinh-lo-roi-tu-giai-dac-biet\" \"b\u1eaft](\"\/wp-content\/uploads\/2024\/04\/tinh-lo-roi-tu-giai-dac-biet.png\")
C\u00e1ch t\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t r\u1ea5t \u0111\u01a1n gi\u1ea3n<\/figcaption><\/figure>\nTh\u01b0\u1eddng c\u00f3 2 lo\u1ea1i l\u00f4 r\u01a1i l\u00e0 r\u01a1i t\u1eeb \u0111\u1ec1 v\u00e0 r\u01a1i t\u1eeb l\u00f4. B\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u1ee5 th\u1ec3 ch\u00fang t\u1ea1i b\u00e0i vi\u1ebft: C\u00e1ch b\u1eaft l\u00f4 r\u01a1i<\/em><\/p>\nC\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t b\u1eb1ng t\u1ed5ng<\/strong><\/span><\/h2>\n\u0110\u00e1nh l\u00f4 theo t\u1ed5ng c\u1ee7a 5 s\u1ed1 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/strong><\/span><\/h3>\nC\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t m\u00e0 c\u1ed9ng t\u1ed5ng c\u1ee7a 5 s\u1ed1 l\u1ea1i v\u1edbi nhau \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 r\u1ea5t l\u1edbn. Theo nh\u01b0 c\u00e1c chuy\u00ean gia l\u00f4 c\u1ee7a ch\u00fang t\u00f4i t\u1ed5ng h\u1ee3p. C\u00e1ch \u0111\u00e1nh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00e1c anh em ch\u01a1i l\u00e2u n\u0103m \u00e1p d\u1ee5ng. V\u00e0 \u0111em l\u1ea1i t\u1ec9 l\u1ec7 tr\u00fang v\u00f4 c\u00f9ng cao.<\/p>\n
\u01afu \u0111i\u1ec3m c\u1ee7a c\u00e1ch n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng v\u1ec1 r\u1ea5t cao. C\u00e1ch t\u00ednh n\u00e0y c\u00f2n c\u1ef1c k\u1ef3 \u0111\u01a1n gi\u1ea3n. V\u00e0 th\u00edch h\u1ee3p cho nh\u1eefng anh em m\u1edbi ch\u01a1i ch\u01b0a c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m v\u00e0 v\u1ed1n c\u00f2n kh\u00e1 \u00edt. V\u1edbi c\u00e1ch n\u00e0y anh em v\u1eeba c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c th\u1eddi gian m\u00e0 v\u1eeba c\u00f3 th\u1ec3 \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 cao. C\u00e1ch t\u00ednh r\u1ea5t d\u1ec5 anh em ch\u1ec9 c\u1ea7n c\u1ed9ng t\u1ed5ng 5 s\u1ed1 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1ea1i v\u1edbi nhau. Sau \u0111\u00f3 l\u1ea5y s\u1ed1 t\u1ed5ng m\u00e0 ch\u00fang ta c\u1ed9ng \u0111\u01b0\u1ee3c t\u1eeb gi\u1ea3i \u0111\u1eb7c sang \u0111\u00e1nh l\u00f4.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t ng\u00e0y h\u00f4m nay v\u1ec1 l\u00e0: 23119<\/p>\n
Anh em l\u1ea5y 2 + 3 + 1 + 1 + 9 = 16. L\u00fac n\u00e0y anh em l\u1ea5y s\u1ed1 16 v\u00e0 61 n\u00e0y \u0111i \u0111\u00e1nh l\u00f4.<\/p>\n
Tuy nhi\u00ean v\u1edbi c\u00e1ch n\u00e0y ch\u00fang t\u00f4i khuy\u00ean c\u00e1c b\u1ea1n r\u1eb1ng ch\u1ec9 nu\u00f4i trong 7 ng\u00e0y. Qu\u00e1 th\u1eddi gian th\u00ec anh em n\u00ean \u0111\u1ed5i sang t\u1ed5ng kh\u00e1c. Th\u01b0\u1eddng th\u01b0\u1eddng th\u00ec 2 \u2013 5 ng\u00e0y th\u00ec anh em h\u00e3y \u0111\u1ed5i s\u1ed1.<\/p>\n![\"cong\" \"c\u00e1ch](\"\/wp-content\/uploads\/2024\/04\/cong.jpg\")
Anh em ch\u1ec9 c\u1ea7n c\u1ed9ng 5 con s\u1ed1 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1ea1i v\u1edbi nhau<\/figcaption><\/figure>\nGhi l\u00f4 theo t\u1ed5ng \u0111\u1ec1<\/strong><\/span><\/h3>\n\u0110\u1ec3 c\u00f3 th\u1ec3 soi c\u1ea7u l\u00f4 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Th\u00ec ghi l\u00f4 theo t\u1ed5ng \u0111\u1ec1 c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c nh\u1ea5t hi\u1ec7n nay. V\u1edbi c\u00e1ch ghi l\u00f4 n\u00e0y, anh em c\u1ea7n d\u1ef1a theo b\u1ea3ng t\u1ed5ng h\u1ee3p k\u1ebft qu\u1ea3 ch\u01a1i \u0111\u1ec1 \u0111\u00e3 c\u00f3 tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n
Sau \u0111\u00f3, t\u1ea1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, ta s\u1ebd c\u00f3 gi\u1ea3i ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 \u0111\u1ec3 \u0111\u01b0a ra nh\u1eefng con s\u1ed1 t\u1ed5ng. \u0110\u00e2y s\u1ebd s\u1ed1 l\u00f4 c\u00f3 x\u00e1c su\u1ea5t tr\u00fang cao nh\u1ea5t trong ng\u00e0y 1 \u2013 2 ng\u00e0y t\u1edbi. C\u00e1ch ch\u01a1i n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i \u0111em l\u1ea1i x\u00e1c su\u1ea5t tr\u00fang t\u01b0\u01a1ng \u0111\u1ed1i cao. B\u1edfi ch\u1ec9 c\u1ea7n d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 c\u1ee7a s\u1ed1 \u0111\u1ec1 \u0111\u00e3 ra. \u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 l\u00e0 anh em \u0111\u00e3 c\u00f3 th\u1ec3 s\u1edf h\u1eefu ngay cho m\u00ecnh con l\u00f4 \u0111\u1eb9p<\/p>\n
V\u00ed d\u1ee5: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111\u1ec1 h\u00f4m nay v\u1ec1 10221. Anh em c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 h\u00ecn qu\u1ea3 tr\u00e1m nh\u01b0 sau<\/p>\n![\"ghi-lo-theo-tong-de\" \"ghi](\"\/wp-content\/uploads\/2024\/04\/ghi-lo-theo-tong-de.png\")
Ghi l\u00f4 theo t\u1ed5ng \u0111\u1ec1 \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u anh em \u00e1p d\u1ee5ng<\/figcaption><\/figure>\nTa s\u1ebd \u0111\u01b0\u1ee3c d\u00e3y s\u1ed1 t\u1ed5ng \u0111\u1ec1 l\u00e0: T\u1ed5ng \u0111\u1ec1 1, t\u1ed5ng \u0111\u1ec3 2, t\u1ed5ng \u0111\u1ec1 3. V\u1eady th\u00ec k\u1ebft qu\u1ea3 ghi l\u00f4 tr\u1ea3 v\u1ec1 c\u00f3 th\u1ec3 s\u1ebd l\u00e0: 01 \u2013 02 \u2013 03<\/p>\n
Gh\u00e9p s\u1ed1 gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa gi\u1ea3i 6<\/strong><\/span><\/h2>\nC\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p s\u1ed1 gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i 6 c\u0169ng kh\u00f4ng kh\u00f4ng c\u00f3 g\u00ec l\u00e0 qu\u00e1 kh\u00f3. M\u00e0 c\u00e1ch n\u00e0y l\u1ea1i c\u00f3 t\u1ec9 l\u1ec7 tr\u00fang r\u1ea5t l\u1edbn. Kh\u00f4ng nh\u1eefng v\u1eady t\u1ec9 l\u1ec7 \u0103n c\u1ee7a c\u00e1ch gh\u00e9p n\u00e0y l\u1ea1i v\u00f4 c\u00f9ng cao. \u0110\u1ed1i v\u1edbi t\u1ef7 l\u1ec7 \u0103n c\u1ee7a l\u00f4 th\u01b0\u1eddng l\u00e0 23k \u0103n 80k. Ch\u00ednh v\u00ec v\u1eady v\u1edbi c\u00e1ch n\u00e0y anh em ch\u1ec9 n\u00ean \u0111\u00e1nh nhi\u1ec1u nh\u1ea5t l\u00e0 3 con v\u1edbi s\u1ed1 \u0111i\u1ec3m b\u1eb1ng nhau.<\/p>\n
N\u1ebfu anh em \u0111\u00e1nh tr\u00fang 1 trong 3 con n\u00e0y th\u00ec s\u1ed1 ti\u1ec1n l\u00e3i c\u1ee7a anh em l\u00e0 11k. Nh\u01b0ng v\u1edbi c\u00e1ch n\u00e0y anh em c\u1ea7n h\u1ebft s\u1ee9c l\u01b0u \u00fd kh\u00f4ng n\u00ean ch\u01a1i qu\u00e1 4 con. M\u1eb7c d\u00f9 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t n\u00e0y l\u00e0 r\u1ea5t hi\u1ec7u qu\u1ea3. Nh\u01b0ng anh em kh\u00f4ng n\u00ean ham qu\u00e1 d\u1eabn \u0111\u1ebfn m\u1ea5t h\u1ebft.<\/p>\n
C\u00e1ch gh\u00e9p c\u1ee7a s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa gi\u1ea3i 6 n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 \u00e1p d\u1ee5ng. M\u00e0 b\u1ea5t c\u1ee9 anh em n\u00e0o c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u00f9 l\u00e0 m\u1edbi ch\u01a1i hay \u0111\u00e3 ch\u01a1i t\u1eeb l\u00e2u. Anh em ch\u1ec9 c\u1ea7n l\u1ea5y con s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t gh\u00e9p v\u1edbi 3 con gi\u1eefa c\u1ee7a gi\u1ea3i 6. L\u00fac n\u00e0y s\u1ebd t\u1ea1o ra 3 con l\u00f4. M\u00e0 theo th\u1ed1ng k\u1ebf n\u1ebfu \u00e1p d\u1ee5ng theo c\u00e1ch n\u00e0y g\u1ea7n nh\u01b0 ng\u00e0y n\u00e0o anh em c\u0169ng tr\u00fang gi\u1ea3i.<\/p>\n
V\u00ed d\u1ee5: B\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 ng\u00e0y h\u00f4m \u0111\u00f3 c\u00f3 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 972<\/strong>31 v\u00e0 c\u00f3 c\u00e1c gi\u1ea3i 6 l\u00e0 89<\/strong>7, 97<\/strong>1, 63<\/strong>6. L\u00fac n\u00e0y anh em ch\u00fang ta ch\u1ec9 c\u1ea7n l\u1ea5y 3 con s\u1ed1 \u1edf gi\u1eefa c\u1ee7a gi\u1ea3i 6 \u0111em \u0111i gh\u00e9p v\u1edbi s\u1ed1 gi\u1eefa trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Khi \u0111\u00f3 anh em ch\u00fang ta s\u1ebd c\u00f3 c\u00e1c con l\u00f4 l\u00e0 29, 27, 21.<\/p>\n![\"giai-dac-biet-voi-giai-giua-so-6\" \"c\u00e1ch](\"\/wp-content\/uploads\/2024\/04\/giai-dac-biet-voi-giai-giua-so-6.png\")
Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 t\u1ec9 l\u1ec7 tr\u00fang r\u1ea5t cao<\/figcaption><\/figure>\nT\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/strong><\/span><\/h2>\nT\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh th\u1ee9c ch\u01a1i l\u00f4 ph\u1ed5 bi\u1ebfn hi\u1ec7n nay. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u0169ng c\u1ef1c k\u00ec l\u00e0 \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng hi\u1ec7u qu\u1ea3 n\u00f3 mang l\u1ea1i ch\u1eafc ch\u1eafn s\u1ebd l\u00e0m anh em ch\u00fang ta b\u1ea5t ng\u1edd.<\/p>\n
Anh em ch\u00fang ta ch\u1ec9 c\u1ea7n ch\u00fa \u00fd m\u1ed9t ch\u00fat l\u00e0 c\u00f3 th\u1ec3 bi\u1ebft c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. V\u00e0 gi\u00e0nh gi\u1ea3i th\u01b0\u1edfng cao b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n n\u00e0y. Ch\u00ednh v\u00ec ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 m\u00e0 r\u1ea5t nhi\u1ec1u anh em ch\u01a1i \u0111\u1ec1 l\u1ef1a ch\u1ecdn.<\/p>\n
B\u1edfi c\u00e1ch n\u00e0y l\u00e0 c\u1ea7u l\u00f4 ch\u1ea1y r\u1ea5t \u1ed5n \u0111\u1ecbnh l\u00e0 \u0111i\u1ec1u m\u00e0 b\u1ea5t c\u1ee9 anh em ch\u01a1i n\u00e0o c\u0169ng mong mu\u1ed1n. \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c. Anh em ch\u1ec9 c\u1ea7n l\u1ea5y s\u1ed1 ch\u1ec9 c\u1ea7n l\u1ea5y s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Gh\u00e9p v\u1edbi s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i \u1edf m\u1ed9t gi\u1ea3i n\u00e0o \u0111\u00f3 theo h\u00ecnh tam gi\u00e1c.<\/p>\n![\"tam-giac-giai-6\" \"c\u00e1ch](\"\/wp-content\/uploads\/2024\/04\/tam-giac-giai-6.png\")
T\u00ednh l\u00f4 tam gi\u00e1c \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi \u00e1p d\u1ee5ng hi\u1ec7n nay<\/figcaption><\/figure>\nV\u00ed d\u1ee5:<\/p>\n
Ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u tam gi\u00e1c gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u00e0 gi\u1ea3i 6. Anh em c\u0169ng ch\u1ec9 c\u1ea7n l\u1ea5y con s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Gh\u00e9p v\u1edbi s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i 6 theo h\u00ecnh tam gi\u00e1c. Nh\u01b0ng \u1edf v\u00ed d\u1ee5 n\u00e0y c\u1ea3 s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i 6 \u0111\u1ec1u l\u00e0 s\u1ed1 8.<\/p>\n
L\u00fac n\u00e0y anh em v\u1eabn gh\u00e9p nh\u01b0 c\u00e1ch tr\u00ean v\u00e0 \u0111\u01b0\u1ee3c con s\u1ed1 l\u00e0 18. Nh\u01b0ng v\u1edbi c\u00e1ch n\u00e0y \u0111\u1ec3 \u0103n ch\u1eafc v\u00e0 tr\u00e1nh b\u1ecb l\u1ed9n \u0111\u1ea7u anh em n\u00ean \u0111\u00e1nh 2 con l\u00f4 \u0111\u00f3 l\u00e0 18 v\u00e0 81.<\/p>\n
Tr\u00ean \u0111\u00e2y l\u00e0 to\u00e0n b\u1ed9 nh\u1eefng c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/em> m\u00e0 ch\u00fang t\u00f4i t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c. B\u1ea1n c\u00f2n c\u00e1ch n\u00e0o c\u00f3 th\u1ec3 chia s\u1ebb cho ch\u00fang t\u00f4i v\u00e0 c\u00f9ng anh em t\u00ecm h\u01b0\u1edbng v\u00e0o b\u1edd nhanh ch\u00f3ng<\/p>\n<\/div>\n<\/article>\n<\/main><\/div>\n<\/div>\n<\/div>\n
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k\u1ebft qu\u1ea3 soi c\u1ea7u cao c\u1ea5p
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C\u00e1ch t\u00ednh l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng n\u00f3 l\u1ea1i \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 c\u1ef1c k\u1ef3 cao. C\u00e1ch t\u00ednh kh\u00f4ng c\u00f3 g\u00ec l\u00e0 qu\u00e1 kh\u00f3. Anh em ch\u1ec9 c\u1ea7n \u0111\u1ec3 \u00fd v\u00e0 quan s\u00e1t k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 m\u1ed9t ch\u00fat l\u00e0 c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c con l\u00f4 r\u01a1i t\u1eeb gi\u1ea3i \u0111\u1eb7c bi\u1ec7t.<\/p>\n Th\u01b0\u1eddng c\u00f3 2 lo\u1ea1i l\u00f4 r\u01a1i l\u00e0 r\u01a1i t\u1eeb \u0111\u1ec1 v\u00e0 r\u01a1i t\u1eeb l\u00f4. B\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u1ee5 th\u1ec3 ch\u00fang t\u1ea1i b\u00e0i vi\u1ebft: C\u00e1ch b\u1eaft l\u00f4 r\u01a1i<\/em><\/p>\n C\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t m\u00e0 c\u1ed9ng t\u1ed5ng c\u1ee7a 5 s\u1ed1 l\u1ea1i v\u1edbi nhau \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 r\u1ea5t l\u1edbn. Theo nh\u01b0 c\u00e1c chuy\u00ean gia l\u00f4 c\u1ee7a ch\u00fang t\u00f4i t\u1ed5ng h\u1ee3p. C\u00e1ch \u0111\u00e1nh n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00e1c anh em ch\u01a1i l\u00e2u n\u0103m \u00e1p d\u1ee5ng. V\u00e0 \u0111em l\u1ea1i t\u1ec9 l\u1ec7 tr\u00fang v\u00f4 c\u00f9ng cao.<\/p>\n \u01afu \u0111i\u1ec3m c\u1ee7a c\u00e1ch n\u00e0y l\u00e0 kh\u1ea3 n\u0103ng v\u1ec1 r\u1ea5t cao. C\u00e1ch t\u00ednh n\u00e0y c\u00f2n c\u1ef1c k\u1ef3 \u0111\u01a1n gi\u1ea3n. V\u00e0 th\u00edch h\u1ee3p cho nh\u1eefng anh em m\u1edbi ch\u01a1i ch\u01b0a c\u00f3 nhi\u1ec1u kinh nghi\u1ec7m v\u00e0 v\u1ed1n c\u00f2n kh\u00e1 \u00edt. V\u1edbi c\u00e1ch n\u00e0y anh em v\u1eeba c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c th\u1eddi gian m\u00e0 v\u1eeba c\u00f3 th\u1ec3 \u0111em l\u1ea1i hi\u1ec7u qu\u1ea3 cao. C\u00e1ch t\u00ednh r\u1ea5t d\u1ec5 anh em ch\u1ec9 c\u1ea7n c\u1ed9ng t\u1ed5ng 5 s\u1ed1 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u1ea1i v\u1edbi nhau. Sau \u0111\u00f3 l\u1ea5y s\u1ed1 t\u1ed5ng m\u00e0 ch\u00fang ta c\u1ed9ng \u0111\u01b0\u1ee3c t\u1eeb gi\u1ea3i \u0111\u1eb7c sang \u0111\u00e1nh l\u00f4.<\/p>\n V\u00ed d\u1ee5:<\/p>\n Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t ng\u00e0y h\u00f4m nay v\u1ec1 l\u00e0: 23119<\/p>\n Anh em l\u1ea5y 2 + 3 + 1 + 1 + 9 = 16. L\u00fac n\u00e0y anh em l\u1ea5y s\u1ed1 16 v\u00e0 61 n\u00e0y \u0111i \u0111\u00e1nh l\u00f4.<\/p>\n Tuy nhi\u00ean v\u1edbi c\u00e1ch n\u00e0y ch\u00fang t\u00f4i khuy\u00ean c\u00e1c b\u1ea1n r\u1eb1ng ch\u1ec9 nu\u00f4i trong 7 ng\u00e0y. Qu\u00e1 th\u1eddi gian th\u00ec anh em n\u00ean \u0111\u1ed5i sang t\u1ed5ng kh\u00e1c. Th\u01b0\u1eddng th\u01b0\u1eddng th\u00ec 2 \u2013 5 ng\u00e0y th\u00ec anh em h\u00e3y \u0111\u1ed5i s\u1ed1.<\/p>\n \u0110\u1ec3 c\u00f3 th\u1ec3 soi c\u1ea7u l\u00f4 m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Th\u00ec ghi l\u00f4 theo t\u1ed5ng \u0111\u1ec1 c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh x\u00e1c nh\u1ea5t hi\u1ec7n nay. V\u1edbi c\u00e1ch ghi l\u00f4 n\u00e0y, anh em c\u1ea7n d\u1ef1a theo b\u1ea3ng t\u1ed5ng h\u1ee3p k\u1ebft qu\u1ea3 ch\u01a1i \u0111\u1ec1 \u0111\u00e3 c\u00f3 tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n Sau \u0111\u00f3, t\u1ea1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, ta s\u1ebd c\u00f3 gi\u1ea3i ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 \u0111\u1ec3 \u0111\u01b0a ra nh\u1eefng con s\u1ed1 t\u1ed5ng. \u0110\u00e2y s\u1ebd s\u1ed1 l\u00f4 c\u00f3 x\u00e1c su\u1ea5t tr\u00fang cao nh\u1ea5t trong ng\u00e0y 1 \u2013 2 ng\u00e0y t\u1edbi. C\u00e1ch ch\u01a1i n\u00e0y \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i \u0111em l\u1ea1i x\u00e1c su\u1ea5t tr\u00fang t\u01b0\u01a1ng \u0111\u1ed1i cao. B\u1edfi ch\u1ec9 c\u1ea7n d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 c\u1ee7a s\u1ed1 \u0111\u1ec1 \u0111\u00e3 ra. \u00c1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 l\u00e0 anh em \u0111\u00e3 c\u00f3 th\u1ec3 s\u1edf h\u1eefu ngay cho m\u00ecnh con l\u00f4 \u0111\u1eb9p<\/p>\n V\u00ed d\u1ee5: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111\u1ec1 h\u00f4m nay v\u1ec1 10221. Anh em c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p t\u00ednh t\u1ed5ng \u0111\u1ec1 h\u00ecn qu\u1ea3 tr\u00e1m nh\u01b0 sau<\/p>\n Ta s\u1ebd \u0111\u01b0\u1ee3c d\u00e3y s\u1ed1 t\u1ed5ng \u0111\u1ec1 l\u00e0: T\u1ed5ng \u0111\u1ec1 1, t\u1ed5ng \u0111\u1ec3 2, t\u1ed5ng \u0111\u1ec1 3. V\u1eady th\u00ec k\u1ebft qu\u1ea3 ghi l\u00f4 tr\u1ea3 v\u1ec1 c\u00f3 th\u1ec3 s\u1ebd l\u00e0: 01 \u2013 02 \u2013 03<\/p>\n C\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p s\u1ed1 gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i 6 c\u0169ng kh\u00f4ng kh\u00f4ng c\u00f3 g\u00ec l\u00e0 qu\u00e1 kh\u00f3. M\u00e0 c\u00e1ch n\u00e0y l\u1ea1i c\u00f3 t\u1ec9 l\u1ec7 tr\u00fang r\u1ea5t l\u1edbn. Kh\u00f4ng nh\u1eefng v\u1eady t\u1ec9 l\u1ec7 \u0103n c\u1ee7a c\u00e1ch gh\u00e9p n\u00e0y l\u1ea1i v\u00f4 c\u00f9ng cao. \u0110\u1ed1i v\u1edbi t\u1ef7 l\u1ec7 \u0103n c\u1ee7a l\u00f4 th\u01b0\u1eddng l\u00e0 23k \u0103n 80k. Ch\u00ednh v\u00ec v\u1eady v\u1edbi c\u00e1ch n\u00e0y anh em ch\u1ec9 n\u00ean \u0111\u00e1nh nhi\u1ec1u nh\u1ea5t l\u00e0 3 con v\u1edbi s\u1ed1 \u0111i\u1ec3m b\u1eb1ng nhau.<\/p>\n N\u1ebfu anh em \u0111\u00e1nh tr\u00fang 1 trong 3 con n\u00e0y th\u00ec s\u1ed1 ti\u1ec1n l\u00e3i c\u1ee7a anh em l\u00e0 11k. Nh\u01b0ng v\u1edbi c\u00e1ch n\u00e0y anh em c\u1ea7n h\u1ebft s\u1ee9c l\u01b0u \u00fd kh\u00f4ng n\u00ean ch\u01a1i qu\u00e1 4 con. M\u1eb7c d\u00f9 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t n\u00e0y l\u00e0 r\u1ea5t hi\u1ec7u qu\u1ea3. Nh\u01b0ng anh em kh\u00f4ng n\u00ean ham qu\u00e1 d\u1eabn \u0111\u1ebfn m\u1ea5t h\u1ebft.<\/p>\n C\u00e1ch gh\u00e9p c\u1ee7a s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa gi\u1ea3i 6 n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 \u00e1p d\u1ee5ng. M\u00e0 b\u1ea5t c\u1ee9 anh em n\u00e0o c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng d\u00f9 l\u00e0 m\u1edbi ch\u01a1i hay \u0111\u00e3 ch\u01a1i t\u1eeb l\u00e2u. Anh em ch\u1ec9 c\u1ea7n l\u1ea5y con s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t gh\u00e9p v\u1edbi 3 con gi\u1eefa c\u1ee7a gi\u1ea3i 6. L\u00fac n\u00e0y s\u1ebd t\u1ea1o ra 3 con l\u00f4. M\u00e0 theo th\u1ed1ng k\u1ebf n\u1ebfu \u00e1p d\u1ee5ng theo c\u00e1ch n\u00e0y g\u1ea7n nh\u01b0 ng\u00e0y n\u00e0o anh em c\u0169ng tr\u00fang gi\u1ea3i.<\/p>\n V\u00ed d\u1ee5: B\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 ng\u00e0y h\u00f4m \u0111\u00f3 c\u00f3 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 972<\/strong>31 v\u00e0 c\u00f3 c\u00e1c gi\u1ea3i 6 l\u00e0 89<\/strong>7, 97<\/strong>1, 63<\/strong>6. L\u00fac n\u00e0y anh em ch\u00fang ta ch\u1ec9 c\u1ea7n l\u1ea5y 3 con s\u1ed1 \u1edf gi\u1eefa c\u1ee7a gi\u1ea3i 6 \u0111em \u0111i gh\u00e9p v\u1edbi s\u1ed1 gi\u1eefa trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Khi \u0111\u00f3 anh em ch\u00fang ta s\u1ebd c\u00f3 c\u00e1c con l\u00f4 l\u00e0 29, 27, 21.<\/p>\n T\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh th\u1ee9c ch\u01a1i l\u00f4 ph\u1ed5 bi\u1ebfn hi\u1ec7n nay. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u0169ng c\u1ef1c k\u00ec l\u00e0 \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng hi\u1ec7u qu\u1ea3 n\u00f3 mang l\u1ea1i ch\u1eafc ch\u1eafn s\u1ebd l\u00e0m anh em ch\u00fang ta b\u1ea5t ng\u1edd.<\/p>\n Anh em ch\u00fang ta ch\u1ec9 c\u1ea7n ch\u00fa \u00fd m\u1ed9t ch\u00fat l\u00e0 c\u00f3 th\u1ec3 bi\u1ebft c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. V\u00e0 gi\u00e0nh gi\u1ea3i th\u01b0\u1edfng cao b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n n\u00e0y. Ch\u00ednh v\u00ec ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 m\u00e0 r\u1ea5t nhi\u1ec1u anh em ch\u01a1i \u0111\u1ec1 l\u1ef1a ch\u1ecdn.<\/p>\n B\u1edfi c\u00e1ch n\u00e0y l\u00e0 c\u1ea7u l\u00f4 ch\u1ea1y r\u1ea5t \u1ed5n \u0111\u1ecbnh l\u00e0 \u0111i\u1ec1u m\u00e0 b\u1ea5t c\u1ee9 anh em ch\u01a1i n\u00e0o c\u0169ng mong mu\u1ed1n. \u0110\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c. Anh em ch\u1ec9 c\u1ea7n l\u1ea5y s\u1ed1 ch\u1ec9 c\u1ea7n l\u1ea5y s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Gh\u00e9p v\u1edbi s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i \u1edf m\u1ed9t gi\u1ea3i n\u00e0o \u0111\u00f3 theo h\u00ecnh tam gi\u00e1c.<\/p>\n V\u00ed d\u1ee5:<\/p>\n Ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u tam gi\u00e1c gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u00e0 gi\u1ea3i 6. Anh em c\u0169ng ch\u1ec9 c\u1ea7n l\u1ea5y con s\u1ed1 gi\u1eefa c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. Gh\u00e9p v\u1edbi s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i 6 theo h\u00ecnh tam gi\u00e1c. Nh\u01b0ng \u1edf v\u00ed d\u1ee5 n\u00e0y c\u1ea3 s\u1ed1 \u0111\u1ea7u v\u00e0 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i 6 \u0111\u1ec1u l\u00e0 s\u1ed1 8.<\/p>\n L\u00fac n\u00e0y anh em v\u1eabn gh\u00e9p nh\u01b0 c\u00e1ch tr\u00ean v\u00e0 \u0111\u01b0\u1ee3c con s\u1ed1 l\u00e0 18. Nh\u01b0ng v\u1edbi c\u00e1ch n\u00e0y \u0111\u1ec3 \u0103n ch\u1eafc v\u00e0 tr\u00e1nh b\u1ecb l\u1ed9n \u0111\u1ea7u anh em n\u00ean \u0111\u00e1nh 2 con l\u00f4 \u0111\u00f3 l\u00e0 18 v\u00e0 81.<\/p>\n Tr\u00ean \u0111\u00e2y l\u00e0 to\u00e0n b\u1ed9 nh\u1eefng c\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/em> m\u00e0 ch\u00fang t\u00f4i t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c. B\u1ea1n c\u00f2n c\u00e1ch n\u00e0o c\u00f3 th\u1ec3 chia s\u1ebb cho ch\u00fang t\u00f4i v\u00e0 c\u00f9ng anh em t\u00ecm h\u01b0\u1edbng v\u00e0o b\u1edd nhanh ch\u00f3ng<\/p>\n<\/div>\n<\/article>\n <\/main><\/div>\n<\/div>\n<\/div>\nC\u00e1ch t\u00ednh l\u00f4 theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t b\u1eb1ng t\u1ed5ng<\/strong><\/span><\/h2>\n
\u0110\u00e1nh l\u00f4 theo t\u1ed5ng c\u1ee7a 5 s\u1ed1 \u1edf gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/strong><\/span><\/h3>\n
Ghi l\u00f4 theo t\u1ed5ng \u0111\u1ec1<\/strong><\/span><\/h3>\n
Gh\u00e9p s\u1ed1 gi\u1eefa gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1edbi s\u1ed1 gi\u1eefa gi\u1ea3i 6<\/strong><\/span><\/h2>\n
T\u00ednh l\u00f4 tam gi\u00e1c theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/strong><\/span><\/h2>\n
k\u1ebft qu\u1ea3 soi c\u1ea7u cao c\u1ea5p
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