GMAT 考满分题库

A certain box contains only red balls and green balls. If one ball is randomly selected from the box, what is the probability that it is red?

(1) Red balls comprise exactly two-thirds of all the balls in the box.

(2) The probability of selecting a green ball from the box is$$\frac{ 1}{3}$$.
  • 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: D

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