AMC 8 2013 Problem 14

AMC8 2013 年第 14 题

概率★★★☆☆

Abe holds 1 green and 1 red jelly bean in his hand. Bob holds 1 green, 1 yellow, and 2 red jelly beans in his hand. Each randomly picks a jelly bean to show the other. What is the probability that the colors match?

手里拿着一颗绿色的和一颗红色的果冻豆。Bob 手里拿着一颗绿色的、一颗黄色的和两颗红色的果冻豆。每个人随机挑选一个果冻豆给对方看。那么这两颗果冻豆颜色匹配的概率是多少？

A. $\frac14$
B. $\frac13$
C. $\frac38$
D. $\frac12$
E. $\frac23$

正确答案 · Correct Answer

解析 · Solution

解析整理中

继续练习

免费刷 2013 整卷 →登录解锁诊断（看你哪儿弱）→