Question

Calcule o valor da expressao P5+3A7,5+C5,3

Answer 1

P(n) = n!
A(n.k) = n!/(n-k)!
C(n,k) = n!/(n-k)!k!

P(5) = 5! = 120
A(7,5) = 7!/2! = 2520
C(5,3) = 5!/2!3! = 10

y = 120 + 3*2520 + 10 = 7690