Q15:
If w, x, y, and z are integers such that 1 < w < x < y < z and wxyz = 462, then z =?
A. 7
B. 11
C. 14
D. 21
E. 42
Answer: b
我知道b行但是a 为什么不行呢?比如2*3*11*7
462=2*3*7*11
所以z=11
thanks a lot
欢迎光临 ChaseDream (https://forum.chasedream.com/) | Powered by Discuz! X3.3 |