1
3, 6, ____
9
20
5, 10, _____
15
30, 40, ____
50
7, 8, 9, ____
10
12, 15, 18, ____
21
6, 8, 10, _____
12
12, 16, 20, ____
24
15, 20, 25, ____
30
____, 8, 12
4
2, 4, 6, ____
8
8, 10, 12, 14, _____
16
____, 6, 9, 12
3
20, 30, ____
40
20, 25, 30, 35,_____
40
6, 12, ____
18
20, 24, 28, ____
32
8, 10, 12, ____
14
____, 10, 15
5
____, 12, 18
6
35, 40, 45, ____
50
24, 28, 32, _____
36
21, 24, 27, _____
30
64, 66, 68,
70
9, 18, ___
27