GWD 13-10

flyinggemini

Q10: If x and y are positive integers, what is the value of x? (1) 3x5y = 1,125 (2) y = 3 A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.

Key: A

I pick C

小菜花

看第二个条件的时候别把第一个条件放一起考虑啊

试问给出Y，你怎么得出X

oumengling

我选D，第二条件，y=3,也可以直接得出x=2,那么D为什么不对呢？

zouweiyao

我认为是这个题目抄错了,正确的条件(1)应该是3^X * 5^Y=1,125

因为3^2 * 5^3=1125,所以X=2, Y=3. 所以A直接可得答案.

albertjerrys

应该是C吧，这道题怎么可能是A？？

BCorBentley

(1) xy=75 ,not

(2)y=3 not

I agree C