回複：趁兩高手在,再請教兩個題目...最要命的是我連題目都沒看懂

來源: 於 2009-12-06 12:31:05 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

Given : s/t=64.12
By definition of the remainder, and let remainder = R
S = T * 64.12 = 64 T + 0.12 T = 64 T + R

Thus,

0.12 T = R
T = R/0.12, and T must be an integer
try plug 2, 4 ,8, 20. 45

you will find T is an integer only when R = 45

Thus,
the remainder is
45