contestada

Sanda has 16 red roses and 40 white roses she wants to make arrangements with the same amount to red roses and white roses. how many arrangements can she make

Respuesta :

C(n,r) =n!/(r!(n-r)!)
c(n,r)= c (40,16)
= 40!/(16!(40-16)!)
=6.2852101650+10
=62852101650