How do you evaluate 20P2?

Montenovofe 2022-07-05 Answered
How do you evaluate 20P2?
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Answers (1)

Answered 2022-07-06 Author has 20 answers
Step 1
The general formula for a permutation is
n P r = n ! n - r !
Step 2
In this case, n = 20 and r = 2 , so our equation becomes
20 P 2 = 20 ! 18 ! = ( 20 × 19 ) = 380
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