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Chapter 13: Q. 8 (page 855)

Find the value of each permutation.

P(7,2)

Short Answer

Expert verified

The value of the given permutation is 42.

Step by step solution

01

Step 1. Given information.

The given permutation is P(7,2).

02

Step 2. Determine the value of the permutation.

We know that,

P(n,r)=n!(n-r)!

The given permutation can be written as:

P(7,2)=7!(6-2)!=7!5!=7脳6脳5!5!=7脳6=42

03

Step 3. Conclusion.

The value of the given permutation is 42.

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