24
24
36
36
30!
the answer is 24.
81
The differences between a number and the number two on is alternating between 6 and 3. In this case, the next number will be 24 + 6 = 30.
24
12 because they are decreasing by increments of 6
Think it's 30...then 20
Thirty 42 - 18 = 24 24 / 2 = 12 18 + 12 = 30 42 - 12 = 30