GMAT 考满分题库

Magoosh - 数学DS - 121
A box contains only white balls, red balls and green balls. What is the probability of selecting a ball that is either red or white?

(1) The probability of selecting a white ball at random is$$\frac {2}{5}$$

(2) The probability of selecting a green ball at random is$$\frac {1}{3}$$
  • 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.
显示答案
正确答案: B

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