Question

aplicando a formula A n,p = n!/(n-p) , calcule : a) A7,4 b) A4,3 c)A4,4 ?

Answer 1

a) A 7,4 = 7! / (7 - 4)! = 840

b) A 4,3 = 4! / (4 - 3)! = 24

c) A 4,4 = 4! / (4 - 4) = 24