c\u1ee9ng c\u00e1p nhi\u1ec1u ng\u01b0\u1eddi \u0111\u00e1nh l\u00f4 \u0111\u1ec1 \u0111\u1ec1u ngh\u0129 r\u1eb1ng x\u00e1c su\u1ea5t \u0103n l\u00f4 l\u00e0 27% nh\u01b0ng b\u1ea3n t\u00ednh b\u00ed quy\u1ebft t\u00ednh n\u00e0y ch\u1ec9 \u0111\u00fang khi l\u00f4 kh\u00f4ng v\u1ec1 2 nh\u00e1y. B\u1ea1n c\u1ea7n ch\u00fa \u00fd v\u1ec1 \u0111i\u1ec1u n\u00e0y.<\/p>\n
1\/ B\u1ea1n n\u00ean bi\u1ebft x\u00e1c su\u1ea5t \u0103n l\u00f4 ko ph\u1ea3i 27% m\u00e0 b\u1ea3n ch\u1ea5t ch\u1ec9 l\u00e0 23.76%.<\/h5>\n
n\u1ebfu nh\u01b0 t\u00ednh l\u00f4 v\u1ec1 27 con tr\u00ean t\u1ed5ng s\u1ed1 100 con th\u00ec ki\u00ean c\u1ed1 ph\u1ed5 th\u00f4ng ng\u01b0\u1eddi ch\u01a1i l\u00f4 \u0111\u1ec1 s\u1ebd l\u1ea7m t\u01b0\u1edfng r\u1eb1ng x\u00e1c su\u1ea5t \u0103n l\u00f4 l\u00e0 27%. Th\u1ebf nh\u01b0ng b\u1ea1n c\u1ea7n bi\u1ebft c\u00e1ch th\u1ee9c t\u00ednh n\u00e0y ch\u1ec9 \u0111\u00fang l\u00fac l\u00f4 ko v\u1ec1 hai nh\u00e1y, t\u1ee9c l\u00e0 khi con 33 \u0111\u00e3 v\u1ec1 l\u1ea7n th\u1ee9 nh\u1ea5t v\u00e0 ng\u01b0\u1eddi ta chi\u1ebfc con \u1ea5y ra kh\u00f4ng quay n\u1eefa. \u0110\u1ec3 t\u00ednh x\u00e1c th\u1ef1c \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t ph\u1ea7n tr\u0103m \u0103n khi \u0111\u00e1nh l\u00f4 th\u00ec ng\u01b0\u1eddi ch\u01a1i l\u00f4 \u0111\u1ec1 ph\u1ea3i d\u00f9ng b\u00ed quy\u1ebft to\u00e1n h\u1ecdc x\u00e1c su\u1ea5t \u0111\u1ec3 c\u00e1i tr\u1eeb \u0111i x\u00e1c su\u1ea5t tr\u01b0\u1ee3t l\u00f4. B\u1ea1n h\u00e3y xem x\u00e9t c\u00e1ch kh\u1eafc ph\u1ee5c ngay sau \u0111\u00e2y:<\/p>\n
M\u1ed7i l\u00fac quay, k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 s\u1ebd l\u1ea7n l\u01b0\u1ee3t trong kho\u1ea3ng gi\u1ea3i th\u1ee9 1 \u0111\u1ebfn gi\u1ea3i th\u1ee9 27. \u0110\u1ec3 m\u00e0 t\u1ea1ch l\u00f4 th\u00ec ng\u01b0\u1eddi \u0111\u00e1nh l\u00f4 ph\u1ea3i t\u1ea1ch c\u00f9ng l\u00fac t\u1eeb gi\u1ea3i 1, gi\u1ea3i 2, gi\u1ea3i 3\u2026\u2026. v\u00e0 t\u1ea1ch c\u1ea3 gi\u1ea3i 27, ngh\u0129a l\u00e0 ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i kh\u00f4ng tr\u00fang c\u1ea3 27 gi\u1ea3i x\u1ed5 s\u1ed1.<\/p>\n
l\u00fac quay gi\u1ea3i m\u1ed9t, x\u00e1c su\u1ea5t t\u1ea1ch l\u00e0 99%.<\/h5>\n
l\u00fac quay gi\u1ea3i 2, x\u00e1c su\u1ea5t t\u1ea1ch l\u00e0 99%x99% (\u0111\u1ed3ng th\u1eddi t\u1ea1ch c\u1ea3 gi\u1ea3i m\u1ed9t v\u00e0 gi\u1ea3i 2, x\u00e1c su\u1ea5t tr\u01b0\u1ee3t m\u1ed7i gi\u1ea3i \u0111\u1ed9c l\u1eadp l\u00e0 99%)<\/p>\n
khi quay gi\u1ea3i 3, x\u00e1c su\u1ea5t t\u1ea1ch l\u00e0 99%x99%x99%\u2026.(t\u01b0\u01a1ng t\u1ef1 tr\u00ean)<\/p>\n
t\u01b0\u01a1ng t\u1ef1 th\u00ec \u0111\u1ec3 t\u1ea1ch c\u00f9ng l\u00fac 27 gi\u1ea3i, x\u00e1c su\u1ea5t t\u1ea1ch l\u00e0 (99%)^27 = 76,23%.<\/p>\n
V\u1eady x\u00e1c su\u1ea5t ng\u01b0\u1eddi \u0111\u00e1nh l\u00f4 \u0103n \u0111i\u1ec3m 100% \u2013 76,23% = 23.76%<\/p>\n
V\u00e0 t\u01b0\u01a1ng t\u1ef1 s\u1edf h\u1eefu th\u1ec3 k\u1ec3 x\u00e1c su\u1ea5t \u0111\u1ec3 ng\u01b0\u1eddi \u0111\u00e1nh l\u00f4 \u0103n l\u00f4 ph\u1ea3i ch\u0103ng h\u01a1n kha t\u01b0\u01a1ng \u0111\u1ed1i so v\u1edbi x\u00e1c su\u1ea5t m\u00e0 h\u1ecd v\u1eabn l\u1ea7m t\u01b0\u1edfng.<\/p>\n