Question

Quantos múltiplos de 5 existem entre 7 e 193?

Answer 1

10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115,120,125,130,135,140,145,150,155,160,165,170,175,180,185,190

Answer 2

$An = A1 + (n-1) * r$

190 = 5 + (n-1) * 5
190 = 5 + 5n -5
5n = 190
n = 38 termos