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sweet-ann [11.9K]
3 years ago
7

Evaluate p(7,3) a.24 b.35 c.210

Mathematics
2 answers:
Natali [406]3 years ago
7 0

Answer:

P(7,3) = 210

Step-by-step explanation:

Given : P(7,3)

We have to evaluate the given permutation P(7,3)

We can define P(n,r) is defined as the number of possibilities of choosing r objects from a total of n objects.

nPr=\frac{n!}{\left(n-r\right)!}

For given P(7,3)

Put n = 7 and r = 3 , we have,

=\frac{7!}{\left(7-3\right)!}

Simplify, we have,

=\frac{7!}{4!}

Cancel the factorials, \frac{n!}{\left(n-m\right)!}=n\cdot \left(n-1\right)\cdots \left(n-m+1\right),\:n>m

\frac{7!}{4!}=7\cdot \:6\cdot \:5

Simplify, we have,

= 210

Thus, P(7,3) = 210

sergejj [24]3 years ago
5 0
7P3 = 7 * 6 * 5 = 210
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