Tolong nya. Pke cara nya

87. A = 3, 6, 9, 12, 15
B = 9, 11, 13, 15, 17
jadi = 3, 6, 9, 11, 12, 13, 15, 17 = 8
88. P = 6, 12, 18, 24, 30, 36
Q = 1, 3, 9
jadi = 1, 3, 6, 9, 12, 18, 24, 30, 36 = 9