No 4 dan 5 pake cara yg di bulati

4. c.M={2,3,4,5,6,7,8,9}
d.O={2,3,5,7}
5.a.S={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
b.P={3,5,7,11,13}
c.Q={1,3,5,7,9,11,13,15}