Question

Calcule a expressão y=p3+2A4,2+c5,3

Answer 1

Bom dia Rafa

P(n) = n!
P(3) = 3! = 1*2*3 = 6

A(n,p) = n!/(n - p)!
A(4,2) = 4!/(2!) = 24/2 = 12

C(n,k) = n!/(k!*(n-k)!) 
C(5,3) = 5!/3!*2! = 5*4*3!/3!2! = 20/2 = 10

y = P(3) + 2A(4,2) + C(5,3) 

y = 6 + 24 + 10 = 40