Question

Quantos termos possui a pá (3,7,11...,155)

Answer 1

155 = 3 + ( n - 1 ) 4

155 = 3 + 4n - 4

155 = - 1 + 4n

155 + 1 = 4n

156 = 4n

n = 156 / 4

n = 39