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In nPr = nCr x r!, what does the factor r! count?
AWays to reorder each chosen group
BMembers present in each group
CRepeated draws of one object
DGroups formed from n objects
Answer & Solution
Correct answer: A. Ways to reorder each chosen group
Every combination of r objects can be rearranged in r! ways, and each rearrangement is a different permutation.
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