AMC 8 2018 Problem 11

AMC8 2018 年第 11 题

概率★★★☆☆

Abby, Bridget, and four of their classmates will be seated in two rows of three for a group picture, as shown. If the seating positions are assigned randomly, what is the probability that Abby and Bridget are adjacent to each other in the same row or the same column?

和其他四个同班同学坐在如下所示的两行三列的座位上准备拍集体照。如果座位是随机分配的，那么 Abby 和 Bridget 坐在同一行或者同一列的相邻位置上的概率是多少？

A. $\displaystyle \frac{1}{3}$
B. $\displaystyle \frac{2}{5}$
C. $\displaystyle \frac{7}{15}$
D. $\displaystyle \frac{1}{2}$
E. $\displaystyle \frac{2}{3}$

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