OpenStax, Contemporary Mathematics §7.1 The Multiplication Rule for Counting · Example 2 · Combinatorics · Permutations & combinations
The Multiplication Rule for Counting · Example 2
The University Combinatorics Club has 31 members: 8 seniors, 7 juniors, 5 sophomores, and 11 first-years. How many possible 4-person committees can be formed by selecting 1 member from each class?
OpenStax, Contemporary Mathematics · §7.1 The Multiplication Rule for Counting · Example 2
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