If k is a positive integer, is k the square of an integer? (1)   k is divisible by 4. (2) k is divisible by exactly 4 different prime numbers._出国考试答疑器_GMAT

If k is a positive integer, is k the square of an integer?

(1) k is divisible by 4.

(2) k is divisible by exactly 4 different prime numbers.

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提问小梅老师：老师这道题我也觉得有争议主要是条件2的理解它的意思如果是k有4个不同的质因子那就选E；但是我的理解是k由4个不同的质数相乘那它一定不是一个数的平方所以我就选的B

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