Solution: In use Theorem to compute the values of the
Chapter 9, Problem 4E(choose chapter or problem)
Problem 4E
In use Theorem to compute the values of the indicated quantities. (Assume n is an integer.)
Theorem
The number of subsets of size r (or r-combinations) that can be chosen from a set of n elements, , is given by the formula
or, equivalently
where n and r are nonnegative integers with r ≤ n.
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