2024年5月北美A卷 · 第 1 题

2024年5月北美A卷 · 原库模块 1 · Q1 原库参考解析

The table summarizes members of a local organization by age and whether they live north or south of Center St. If a member of the organization is selected at random, what is the probability that the selected member is at least 45 years old?