54
The next two numbers are 26 & 78.
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.
24
24
24
36
36
(6), 12, 18, 24
36 72 66
36
21-3=18 18/2=9 9*3=27 that is the pattern so after the 36 it should be 33
They are 48, 96 and 192 because the numbers are being doubled after each other