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标题: 求教数学题谢谢 [打印本页]

作者: hhl3000 时间: 2006-3-6 17:16 标题: 求教数学题谢谢

　AＢ

+ BA

AAC

In the correctly worked addition problem shown, where

the sum of the two-digit positive integers AB and BA is

the three-digit integer AAC, and A, B, and C are different digits, what is the units digit of the integer AAC?

A. 9

B. 6

C. 3

D. 2

E. 0

这道题如果不代数字算应该怎么个思路呢？?/谢谢

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