Quantitative Methods Q188

0. The number of ways we can choose r objects from a total of n objects, when the order in which the r objects are listed does matter is given by the permutation formula: Pr = n!/(n – r)! How many permutations are possible when choosing 3 objects from a total of 9 objects?

Answer
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Option : C
Explanation : In this problem, 9! / ( 9 - 3)! = 9! / 6! = 504

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