M\u1eb9o b\u1eaft ch\u1eb5n l\u1ebb c\u1ef1c k\u00ec \u0111\u01a1n gi\u1ea3n<\/figcaption><\/figure>\nD\u00e0n \u0111\u1ec1 l\u1ebb \u2013 ch\u1eb5n l\u00e0 g\u00ec?<\/b><\/h3>\n
Ti\u1ebfp sau d\u1ea1ng ch\u1eb5n l\u1ebb th\u00ec ch\u00fang ta s\u1ebd h\u1ecdc h\u1ecfi c\u00e1ch v\u1ec1 d\u1ea1ng l\u1ebb \u2013 ch\u1eb5n \u0111\u00e1nh \u0111\u1ec1 ch\u1eb5n l\u1ebb \u1edf tr\u00ean con \u0111\u1ec1 n\u00e0y s\u1ebd l\u00e0 t\u1eadp h\u1ee3p c\u1ee7a 2 con s\u1ed1 l\u1ebb v\u00e0 ch\u1eb5n \u1edf c\u00e1c \u0111i\u1ec3m kh\u00e1c \u0111\u00e2y v\u1ec1 d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb ph\u1ea3i s\u1ed1 l\u1ebb s\u1ebd \u0111\u1ee9ng tr\u01b0\u1edbc s\u1ed1 ch\u1eb5n b\u1eaft \u0111\u1ec1 ch\u1eb5n l\u1ebb sao cho hi\u1ec7u qu\u1ea3.<\/span><\/p>\nD\u00e0n \u0111\u1ec1 l\u1ebb \u2013 l\u1ebb l\u00e0 g\u00ec?<\/b><\/h3>\n
D\u1ea1ng l\u1ebb \u2013 l\u1ebb trong d\u00e0n \u0111\u1ec1 l\u00e0 t\u1eadp h\u1ee3p c\u1ee7a nh\u1eefng s\u1ed1 l\u1ebb ch\u00fang ta gh\u00e9p l\u1ea1i c\u00e1c x\u1eb7p s\u1ed1 c\u00f9ng v\u1edbi nhau. V\u00ed d\u1ee5 nh\u01b0 : 35, 37, 57, 79\u2026 m\u1ed9t trong nh\u1eefng d\u1ea1ng \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p anh em c\u00f3 th\u1ec3 l\u01b0u \u00fd.<\/span><\/p>\nD\u00e0n \u0111\u1ec1 ch\u1eb5n ch\u1eb5n c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t?<\/b><\/h3>\n
D\u1ea1ng cu\u1ed1i c\u00f9ng c\u1ee7a c\u1ee7a <\/span>c\u00e1ch b\u1eaft \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/b> l\u00e0 d\u1ea1ng \u0111\u1ec1 ch\u1eb5n \u2013 ch\u1eb5n r\u1ea5t d\u1ec5 hi\u1ec3u nh\u1eefng con s\u1ed1 \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p t\u1eeb nh\u1eefng s\u1ed1 ch\u1eb5n l\u1ea1i v\u1edbi nhau. V\u00ed d\u1ee5 minh h\u1ecda : 28, 46, 40, 68, 66, 20\u2026lo\u1ea1i \u0111\u1ec1 ch\u1eb5n ch\u1eb5n c\u0169ng \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi l\u1ef1a ch\u1ecdn khi ch\u01a1i l\u00f4 \u0111\u1ec1.<\/span><\/p>\nH\u01b0\u1edbng d\u1eabn c\u00e1ch \u0111\u00e1nh \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/b><\/h2>\nL\u00e0m sao \u0111\u1ec3 b\u0103\u0301t \u0111\u00ea\u0300 ch\u01a1i ch\u1eadm theo da\u0300n ch\u0103\u0303n le\u0309?<\/b><\/h3>\n
C\u00e1ch b\u0103\u0301t \u0111\u00ea\u0300 ch\u0103\u0303n le\u0309<\/b> \u0111\u1ec3 nu\u00f4i theo d\u00e0n t\u1eeb r\u1ea5t l\u00e2u \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ef1c nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i c\u00f3 kinh nghi\u1ec7m s\u1eed d\u1ee5ng theo c\u00e1ch n\u00e0y ch\u00fang ta ch\u00fa \u00fd h\u00e3y l\u1ea5y s\u1ed1 \u0111\u1ea7u s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t c\u1ee7a ng\u00e0y ch\u1ee7 nh\u1eadt \u0111\u1ec3 l\u00e0m c\u0103n c\u1ee9 soi c\u1ea7u ch\u1eb5n l\u1ebb v\u1ec1 c\u1eb7p s\u1ed1 n\u00e0y xu\u1ea5t hi\u1ec7n theo d\u1ea1ng n\u00e0o th\u00ec anh em s\u1ebd ti\u1ebfn h\u00e0nh nu\u00f4i d\u00e0n \u0111\u1ec1 theo d\u1ea1ng \u0111\u00f3 b\u1eaft \u0111\u1ec1 ch\u1eb5n l\u1ebb hi\u1ec7u qu\u1ea3 cao.<\/span><\/p>\nV\u00ed d\u1ee5: Ng\u00e0y ch\u1ee7 nh\u1eadt\u00a0 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 84347 c\u00f3 2 s\u1ed1 \u0111\u1ea7u cu\u1ed1i l\u00e0 84 thu\u1ed9c d\u1ea1ng ch\u1eb5n \u2013 ch\u1eb5n \u0111\u00f3 th\u00ec d\u1ef1a v\u00e0o ngu\u1ed3n t\u00e0i ch\u00ednh c\u1ee7a m\u00ecnh m\u1ecdi ng\u01b0\u1eddi h\u00e3y ch\u1ecdn m\u1ed9t con s\u1ed1 \u0111\u1ec3 nu\u00f4i trong 25 ch\u1eef s\u1ed1 ch\u1eb5n ch\u1eb5n \u0111\u00f3.<\/span><\/p>\nT\u00ecm hi\u1ec3u c\u00e1ch soi c\u00e2\u0300u \u0111\u00ea\u0300 ch\u0103\u0303n le\u0309 theo gia\u0309i \u0111\u0103\u0323c bi\u00ea\u0323t<\/b><\/h3>\n
B\u1eaft d\u1ef1a v\u00e0o t\u1ea7n su\u1ea5t gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 <\/span>c\u00e1ch b\u1eaft \u0111\u1ec1 ch\u1eb5n l\u1ebb <\/b>c\u0169ng mang \u0111\u1ebfn hi\u1ec7u qu\u1ea3 r\u1ea5t cao \u0111\u01b0\u1ee3c nhi\u1ec1u anh em \u0111\u1ec1 xu\u1ea5t khi c\u1ea7u \u0111\u1ec1 ch\u1eb5n l\u1ebb. N\u1ebfu quan s\u00e1t t\u1ea7n su\u1ea5t gi\u1ea3i \u0111\u1eb7c bi\u1ec7t m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u1eadn ra c\u00e1c d\u1ea1ng ch\u1eb5n l\u1ebb s\u1ebd kh\u00f4ng xu\u1ea5t hi\u1ec7n trong 4 ng\u00e0y li\u00ean ti\u1ebfp.<\/span><\/p>\nDo \u0111\u00f3 n\u1ebfu khi \u0111\u00e3 soi \u0111\u01b0\u1ee3c m\u1ed9t d\u1ea1ng \u0111\u1ec1 ch\u1eb5n l\u1ebb n\u00e0o m\u00e0 ra 3 ng\u00e0y li\u00ean ti\u1ebfp th\u1ebf ch\u00fang ta s\u1ebd lo\u1ea1i \u0111i 25 s\u1ed1 c\u1ee7a d\u1ea1ng \u0111\u1ec1 \u0111\u00f3 c\u1ea7u \u0111\u1ec1 ch\u1eb5n l\u1ebb anh em c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn d\u1ea1ng \u0111\u1ec1 kh\u00e1c \u0111\u1ec3 nu\u00f4i v\u00e0 \u0111\u00e1nh trong nh\u1eefng ng\u00e0y ti\u1ebfp theo.<\/span><\/p>\n\u0110\u00e1nh c\u1ea7u \u0111\u1ec1 ch\u1eb5n l\u1ebb d\u01b0\u0323a va\u0300o t\u00f4\u0309ng\u00a0 gia\u0309i \u0111\u0103\u0323c bi\u00ea\u0323t<\/b><\/h3>\n
C\u00e1ch b\u1eaft \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/b> c\u0103n c\u1ee9 v\u00e0o t\u1ed5ng c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 g\u00ec? \u0110\u01a1n gi\u1ea3n ch\u1ec9 l\u00e0 m\u1ecdi ng\u01b0\u1eddi s\u1ebd b\u1eaft \u0111\u1ea7u c\u1ed9ng t\u1ed5ng c\u00e1c s\u1ed1 d\u00e0n ch\u1eb5n l\u1ebb trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t xu\u1ea5t hi\u1ec7n trong k\u1ebft qu\u1ea3 t\u1ed5ng \u0111\u1ec1 h\u00f4m nay t\u1eeb \u0111\u00f3 bi\u1ebft \u0111\u01b0\u1ee3c t\u1ed5ng \u0111\u1ec1 s\u1ebd nu\u00f4i l\u00e0 ch\u1eb5n hay l\u1ebb.<\/span><\/p>\n\u0110\u1ec3 anh em d\u1ec5 hi\u1ec3u h\u01a1n ch\u00fang t\u00f4i \u0111\u01b0a ra ng\u00e0y h\u00f4m nay gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 v\u1ec1 12345. T\u1ed5ng c\u1ee7a k\u1ebft qu\u1ea3 n\u00e0y l\u00e0 : 1+2+3+4+5 = 15 ti\u1ebfp t\u1ee5c l\u1ea5y 2 + 4 = 6 ch\u00fang ta s\u1ebd nu\u00f4i d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n trong 3 ng\u00e0y ti\u1ebfp theo \u0111\u1ec3 \u0111\u00e1nh.<\/span><\/p>\n