Faktorisasi prima 27 = 3 x 3 x 3 Faktorisasi prima 81 = 3 x 3 x 3 x 3 FPB = 3 x 3 x 3 = 27. KPK = 3 x 3 x 3 x 3 = 81. c. 6, 10, 15 Jawaban: