Complete the series: 2, 4,10, 28, ______?
- 82
- 70
- 64
- None of these
Explanation
The sequence is formed by adding consecutive terms that are three times larger than the previous gap.
2 + 2 = 4 (gap of 2)
4 + 6 = 10 (gap of 6, which is 3 times 2)
10 + 18 = 28 (gap of 18, which is 3 times 6)
28 + 54 = 82 (gap of 54, which is 3 times 18)
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