Respostas

2013-07-19T16:02:53-03:00
51.1=51 51.2=102 51.3=153 51.4=204 51.5=255  (51,102,153,204,255)
2013-07-19T16:06:17-03:00
Vamos usar a P.A
PA:

a1= 51
r = 51
a2=  51+ 51 =102
a3 =  102+51 = 153
a4 = 153+51=201
a5 = 201+51 = 255