Easy Peasy
3 becomes 4, 5 becomes 6, 8 becomes 9
add 1
9 becomes 6, 12 becomes 9, 20 becomes 17
Subtract 3
2 becomes 6, 4 becomes 12, 7 becomes 21
multiply 3
8 becomes 4, 16 becomes 8, 20 becomes 10
Divide 2
4,6,8,?,12
10
8 becomes 10, 12 becomes 14, 3 becomes 5
add 2
15 becomes 10, 9 becomes 4, 20 becomes 15
Subtract 5
5 becomes 20, 3 becomes 12, 6 becomes 24
Multiply 4
12 becomes 4, 21 becomes 7, 30 becomes 10
Divide 3
10,20,30,40,?,60
50
2 becomes 5, 4 becomes 7, 10 becomes 13
add 3
18 becomes 16, 11 becomes 9, 7 becomes 5
subtract 2
7 becomes 14, 9 becomes 18, 11 becomes 22
20 becomes 5, 16 becomes 4, 36 becomes 9
Divide 4
21,28,?,42,49
35
6 becomes 8, 9 becomes 11, 15 becomes 17
Add 2
25 becomes 15, 14 becomes 4, 30 becomes 20
Subtract 10
3 becomes 6, 5 becomes 10, 8 becomes 16
Multiply 2
18 becomes 9, 14 becomes 7, 26 becomes 13
Divide 2
18,27,?,45
36
7 becomes 17, 10 becomes 20, 15 becomes 25
Add 10
6 becomes 2, 9 becomes 5, 22 becomes 18
Subtract 4
7 becomes 49, 5 becomes 35, 2 becomes 14
Multiply 7
25 becomes 5, 40 becomes 8, 50 becomes 10
Divide 5
24,?,40,48
32