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MIRACAMAROTEIN
Answered

solve for the unknown variable.

1. P(n,3)=504
2. P(n,4)=3024
3.P(13,r)=156​

Sagot :

PHILIP1614IN

P(n,3)=504

504=n!/n-3!

504=n(n-1)(n-2)(n-3)!/n-3! then cancel n-3!

504=n(n-1)(n-2)

504=9×8×7

so n=9