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题库 > 数学DS > 题目75hsmk
If x and y are positive integers, is (x + y) a prime number?

(1) x = 1

(2) y = 2 * 3 * 5 * 7
  • AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are NOT sufficient.
显示答案
正确答案: C

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