The correct answer that is an example of a permutation is; D: The number of ways 7 books can be selected from 50.
How to solve permutation problems?
Formula for permutation is;
nPr = n!/(n - r)!
Now, permutation is defined as the arrangement of objects in a definite order. Thus, looking at the given options, the only one that depicts permutation is Option D.
Thus, the correct answer is the number of ways 7 books can be selected from 50.
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