pls help me pake cara ga papa

4.
30 = 2x3x5
36 = 2²x3²
42 = 2x3x7
kpk = 2²x3² x 7 x 5
5.
24 = 2³x3
15= 3x5
21 = 7x3
fpb = 3

jadi jawabanya nomor 4. A 5.A