The given series is 1, 6, 6, 36, 216, .... To identify the pattern, let's examine the sequence:
- The first term is 1.
- The second term is 6, which is 6 times the first term (6 x 1 = 6).
- The third term remains 6, indicating a switch in multiplication.
- The fourth term is 36, which is 6 times the third term (6 x 6 = 36).
- The fifth term is 216, which is 6 times the fourth term (6 x 36 = 216).
Observing these calculations, the pattern is that every other term is multiplied by 6. The terms form pairs: (1, 6), followed by (6, 36), followed by (216, ...). Continuing this multiplication pattern, the next term is:
Multiplying 1296 by 6 (applying the same rule):
Therefore, the next term in the series is 7776.