Complete the series. 2, 6, 12, 20, 30, 42, _____?
- 50
- 54
- 56
- 62
Explanation
Step 1: Find the pattern (differences)
6 − 2 = 4
12 − 6 = 6
20 − 12 = 8
30 − 20 = 10
42 − 30 = 12
The differences increase by 2 each time:
4, 6, 8, 10, 12, 14
Step 2: Find the next term
Next number = 42 + 14 = 56
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