Question

divisores de 30 intersseção divisores de 25

Answer 1

$D_{30}=\{1,2,3,5,6,10,15,30\}\\ \\ D_{25}=\{1,5,25\}\\ \\ D_{30}\capD{25}=\{1,5\}$

Answer 2

===> d(30) = { 1,2,3,5,6, 10, 15,30} ==> d(25) = {1,5,25} ==>D(30)∩D(25) = {1,5}