What is next number in series:

100 96 104 88 120 56

The difference between each number doubles and alternates between positive and negative. That should help you find the next number.

158

To find the next number in the series, let's analyze the pattern:

The series seems to alternate between two different operations: addition and subtraction.

- In the first operation, 4 is subtracted from the previous number to obtain the next number, as seen in the first two terms: 100 - 4 = 96.
- In the second operation, 16 is added to the previous number to obtain the next number, as seen in the next two terms: 96 + 16 = 112.

Therefore, we can infer that the pattern is as follows:

100 - 4 = 96
96 + 16 = 112
112 - 24 = 88
88 + 32 = 120

Based on this pattern, the next operation should be subtraction:

120 - 40 = 80

Hence, the next number in the series is 80.