Question

quais os multiplos de 20 e os multiplos de 15 ???

Answer 1

M20) = {0,20,40,60,80,100,120,140,................}

M(15) = {0,15,30,45,60,75,90,105,120,..........} 

Answer 2

20: {0,20,40,60,80,100,120,140...}
15: {0,15,30,45,60,75,90,105...}