Question

cate numere naturale de trei cifre distincte au cifrele elemente ale multimii (1,2,3,4,5)? Explicati va rog si cum ati rezolvat

Answer 1

Aranjamente de 5 luate cate3=5!/(5-3)!=5!/2!=2*3*4*5/2=3*4*5=60 de numere
as simple as that!!