The pattern alternates between multiplying by 3 and dividing by 2. Starting with 4, you multiply by 3 to get 12, then divide by 2 to get 6. Continuing this pattern, you multiply 6 by 3 to get 18, then divide by 2 to get 9. Therefore, the next number in the pattern should be 9.
The next two numbers are 26 & 78.
The next number in the series 4, 12, 6, 12, 36, 18, 36
The next number in the series 4-12-6-12-36-18-36.. is 108.
21-3=18 18/2=9 9*3=27 that is the pattern so after the 36 it should be 33
36
54
The next two numbers are 26 & 78.
The next number in the series 4, 12, 6, 12, 36, 18, 36
The next number in the series 4-12-6-12-36-18-36.. is 108.
108
108
108
108
21-3=18 18/2=9 9*3=27 that is the pattern so after the 36 it should be 33
36
108
108