Table of Contents
Each rock in a collection of 70 rocks was classified as either igneous, metamorphic, or sedimentary, as shown in the frequency table.
| Classification | Frequency |
|---|---|
| igneous | 10 |
| metamorphic | 33 |
| sedimentary | 27 |
If one of these rocks is selected at random, what is the probability of selecting an igneous rock?
Difficulty: Easy
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