Question

KPK dari 15, 35 dan 140

Answer 1

840 ya kalau gasalah, hehe

Answer 2

15
/\
3 5

35
/\
5 7

140
/\
2 70
/\
2 35
/\
5 7

15 = 3 × 5
35 = 5 × 7
140 = 2^2 × 5 × 7
KPK = 2^2 × 3 × 5 × 7
KPK = 420