请教一道GWD

zhangzhichen

In the decimal representation of x, where 0 < x < 1, is the tenths digit if x nonzero?

(1)     16x is an integer.

(2)     8x is an integer.

答案选B

不太明白这道题的意思,麻烦哪位明白之人帮偶解答一下, 谢谢啦!

elites

up!!!!!!!!!!!!!