2023年11月A卷 · 第 2 题

2023年11月A卷 · 原库模块 1 · Q2 原库参考解析

Each rock in a collection of 70 rocks was classified as either igneous, metamorphic, or sedimentary, as shown in the frequency table.

If one of these rocks is selected at random, what is the probability of selecting a rock that is igneous?