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Delicious77 [7]
3 years ago
15

What is the value of 7P5? A.5040 B.2520 C.42 D.21

Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0
The answer is <span>B.2520
</span>
For permutation P we will use:
nPr = n!/(n-r)!
7P5 = ?
n = 7
r = 5
7P5 = 7!/(7-5)!
       = (7 * 6 * 5 * 4 * 3 * 2 * 1)/2!
       = 5040/(1 * 2)
       = 5040/2
       = 2520
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