D\u00e0n \u0111\u1ec1 th\u00ec c\u00f3 r\u1ea5t nhi\u1ec1u. Nh\u01b0ng d\u00e0n \u0111\u1ec1 74 s\u1ed1, t\u1ee9c chi\u1ebfm h\u01a1n 2\/3 s\u1ed1 con l\u00f4 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1ed5 s\u1ed1. T\u1ee9c n\u1ebfu ch\u1ecdn \u0111\u00e1nh t\u1edbi 74 th\u00ec t\u1ec9 l\u1ec7 \u0103n l\u00ean t\u1edbi 2\/3. Nh\u01b0ng l\u00e0m sao \u0111\u1ec3 t\u00ecm ra 64 con s\u1ed1 \u1ea5y ? Kh\u00f4ng c\u1ea7n ph\u1ea3i m\u1ea5t ti\u1ec1n, ch\u1ec9 c\u1ea7n theo d\u00f5i b\u00e0i vi\u1ebft sau \u0111\u00e2y, anh em ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u00ecm ra cho m\u00ecnh c\u00e1ch t\u00ednh d\u00e0n \u0111\u1ec1 70 s\u1ed1<\/strong> \u0111\u00e1nh quanh n\u0103m<\/strong> d\u1ec5 \u0103n d\u1ec5 tr\u00fang nh\u1ea5t.<\/p>\n N\u1ebfu nh\u01b0 \u1edf c\u00e1c trang kh\u00e1c, anh ch\u1ecb em ph\u1ea3i n\u1ea1p ti\u1ec1n\/th\u1ebb \u0111i\u1ec7n tho\u1ea1i \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c s\u1ed1. Th\u00ec \u1edf trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn cho c\u00e1c b\u1ea1n c\u00e1ch \u0111\u1ec3 t\u00ecm ra d\u00e0n \u0111\u1ec1 64 con s\u1ed1 \u0111\u00e1nh quanh n\u0103m \u1ea5y.<\/p>\n <\/p>\n Tr\u01b0\u1edbc khi t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1ch ch\u01a1i sao cho hi\u1ec7u qu\u1ea3 th\u00ec anh em ph\u1ea3i hi\u1ec3u s\u01a1 l\u01b0\u1ee3c v\u1ec1 d\u00e0n \u0111\u1ec1 70 s\u1ed1 <\/b>\u0111\u00e3. V\u1eady d\u00e0n \u0111\u1ec1 70 s\u1ed1 l\u00e0 g\u00ec?<\/p>\n D\u00e0n \u0111\u1ec1 70 s\u1ed1<\/b> l\u00e0 c\u00e1ch ch\u01a1i l\u00f4 \u0111\u1ec1 m\u00e0 anh em c\u1ea7n l\u1ef1a ch\u1ecdn c\u00f9ng l\u00fac 70 con s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh trong m\u1ed9t ng\u00e0y. C\u00e1ch ch\u01a1i n\u00e0y gi\u00fap t\u0103ng t\u1ef7 l\u1ec7 chi\u1ebfn th\u1eafng l\u00ean m\u1ee9c cao nh\u1ea5t nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o c\u00f3 l\u00e3i khi con \u0111\u1ec1 v\u1ec1. T\u1ea1i sao? V\u00ec \u0111\u00e1nh 70 s\u1ed1 c\u00f9ng l\u00fac x\u00e1c su\u1ea5t s\u1ebd v\u1ec1 cao h\u01a1n 70 l\u1ea7n so v\u1edbi \u0111\u00e1nh 1 con s\u1ed1 \u0111\u00fang kh\u00f4ng n\u00e0o?<\/p>\n Theo gi\u1edbi chuy\u00ean gia nh\u1eadn \u0111\u1ecbnh th\u00ec anh em n\u00ean l\u1ef1a ch\u1ecdn d\u00e0n \u0111\u1ec1 70 s\u1ed1 \u0111\u00e1nh quanh n\u0103m <\/b>v\u00ec nh\u1eefng l\u00fd do sau:<\/p>\n Th\u1ee9 nh\u1ea5t c\u00e1ch ch\u01a1i n\u00e0y r\u1ea5t an to\u00e0n v\u1edbi x\u00e1c su\u1ea5t n\u1ed5 cao<\/p>\n Th\u1ee9 hai v\u1edbi d\u00e0n \u0111\u1ec1 70 s\u1ed1 <\/b>anh em s\u1ebd lu\u00f4n c\u00f3 l\u00e3i.<\/p>\n Th\u1ee9 ba, vi\u1ec7c \u0111\u00e1nh c\u00f9ng l\u00fac 70 con s\u1ed1 s\u1ebd gi\u00fap anh em kh\u00f4ng ch\u1ec9 h\u1ed1t \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t m\u00e0 c\u00f2n \u0103n \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u con l\u00f4 ph\u1ee5 kh\u00e1c t\u1eeb \u0111\u00e2y s\u1ed1 ti\u1ec1n l\u00e3i s\u1ebd \u0111\u01b0\u1ee3c nh\u00e2n l\u00ean g\u1ea5p nhi\u1ec1u l\u1ea7n.<\/p>\n V\u1eeba d\u1ec5 \u00e1p d\u1ee5ng v\u1eeba d\u1ec5 \u0103n gi\u1ea3i r\u1ea5t \u0111\u00e1ng \u0111\u1ec3 anh em t\u00ecm hi\u1ec3u v\u00e0 \u0111\u01b0a ra chi\u1ebfn l\u01b0\u1ee3c cho ri\u00eang m\u00ecnh \u0111\u00fang kh\u00f4ng n\u00e0o?<\/p>\n Sau khi \u0111\u00e3 t\u00ecm hi\u1ec3u s\u01a1 l\u01b0\u1ee3c v\u1ec1 d\u00e0n \u0111\u1ec1 70 s\u1ed1 th\u00ec anh em h\u00e3y c\u00f9ng t\u00f4i v\u00e0o t\u00ecm ra c\u00e1ch t\u00ednh d\u00e0n \u0111\u1ec1 70 s\u1ed1 b\u1ea5t b\u1ea1i cho ri\u00eang m\u00ecnh th\u00f4i n\u00e0o!<\/p>\nD\u00e0n \u0111\u1ec1 70 s\u1ed1 l\u00e0 g\u00ec? <\/b><\/h2>\n
C\u00e1ch t\u00ednh d\u00e0n \u0111\u1ec1 70 s\u1ed1 \u0111\u00e1nh quanh n\u0103m <\/b><\/h2>\n