GMAT 考满分题库

Magoosh - 数学DS - 179
If x and y are positive integers, is y a prime number?

(1) xy is a prime number.

(2) $$y^2$$ is even.
  • AStatement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
  • BStatement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
  • CBOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
  • DEach statement ALONE is sufficient to answer the question.
  • EStatement 1 and 2 TOGETHER are NOT sufficient to answer the question. Previous
显示答案
正确答案: C

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