Respostas

2014-04-23T22:57:02-03:00
2 -> 2 x 1=2
3 -> 3 x 2 x 1 =6
5 -> 5 x 4 x 3 x 2 x 1 = 120
2014-04-23T23:00:30-03:00
2! ou 2 fatorial é 2*1 = 2

3! = 3*2*1 = 6

5! = 5*4*3*2*1 = 120