AMC 8 2009 Problem 12

AMC8 2009 年第 12 题

概率★★★☆☆

The two spinners shown are spun once and each lands on one of the numbered sectors. What is the probability that the sum of the numbers in the two sectors is prime?

如下所示的两个转盘各自转一次，每个转盘落在各自的某个扇形区域上。那么落在的这两个扇形区域的数字之和是个质数的概率是多少？

A. $\displaystyle \frac{1}{2}$
B. $\displaystyle \frac{2}{3}$
C. $\displaystyle \frac{3}{4}$
D. $\displaystyle \frac{7}{9}$
E. $\displaystyle \frac{5}{6}$

正确答案 · Correct Answer

D

解析 · Solution

解析整理中

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