GMAT 考满分题库

Magoosh - 数学DS - 67
If a light bulb is selected at random from a shipment, what is the probability that the light bulb is defective?

(1) The ratio of the number of defective light bulbs to the number of nondefective light bulbs is 1 to 60.

(2) The shipment contains 720 light bulbs.
  • 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: A

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