If 64 or any number is a multiple of 9, the digits will sum to a

来源: 于 2012-11-19 17:42:18 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

If 64 or any number is a multiple of 9, the digits will sum to a multiple of 9.

6 + 4 = 10

not a multiple of 9. So 9 doesn't divide 64.