GMAT 考满分题库

- 数学DS -
If positive integer $${n}\le{3}$$ and n is the number of times a coin is flipped, what is the value of n?

(1) The probability of getting heads exactly once is $$\frac{1}{2}$$.

(2) The probability of getting at least one tail is greater than $$\frac{1}{2}$$.
  • 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 statement TOGETHER are sufficient, but NEITHER statement 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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