Tolong dong nomer 2,butuh sekali

A.)a.{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}

b.{2,4,6,8,10,12,14}

c.{1,3,5,7,9}

d.{8,8,10,11,12,13,14}

Nomor satu aja ya