[讨论]

yuanzang

If x is a positive integer what is the hundreds digit of x?

(1) The thousands digit of 10 times x is 8.

(2) The hundreds digit of (x + 1) is 9.

I chose D, but the answer is A. Why?

lotery

被题目骗到啰

899+1=900  901+1=902  百位数都是9   

(The hundreds digit of x) + 1 is 9
如果把括弧改成这样就是D