GMAT 考满分题库

Magoosh - 数学PS - 173
Each circle has center O. The radius of the smaller circle is 2 and the radius of the larger circle is 6. If a point is selected at random from the larger circular region, what is the probability that the point will lie in the shaded region?

  • A$$\frac{1}{9}$$
  • B$$\frac{1}{6}$$
  • C$$\frac{2}{3}$$
  • D$$\frac{5}{6}$$
  • E$$\frac{8}{9}$$
正确答案: E

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