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4 September, 23:54

The expression P (4,3) is equal to:

A. 3!

B. 4!

C. 1

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Answers (1)
  1. 5 September, 02:55
    0
    P (n, r) = n! / (n-r) !

    P (4,3) = 4! / (4-3) !

    P (4,3) = 1*2*3*4/1=24
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