thirty-six
3 6 12
6 12 24
18 36 72
in each group of three double previous number
24
36
To find the next number in the sequence 5, 15, 12, 24, 21, 21, 18, we can analyze the pattern. The differences between the numbers are: 10, -3, 12, -3, 0, -3. Following this pattern, the next difference would likely be 12, resulting in a next number of 18 + 12 = 30. Thus, the next number in the sequence is 30.
30!
the answer is 24.
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.
12 because they are decreasing by increments of 6
24
Think it's 30...then 20
Thirty 42 - 18 = 24 24 / 2 = 12 18 + 12 = 30 42 - 12 = 30