In the following series, what numbers should replace the question marks?
–1, 0, 1, 0, 2, 4, 1, 6, 9, 2, 12, 16, ? ? ?
Explanation:
This series contains three series in itself.
Series 1 (T1, T4, T7, T10): –1, 0, 1, 2 (AP with a common difference of +1)
Series 2 (T2, T5, T8, T11): 0, 2, 6, 12 (Differences between two terms increase by 2)
Series 3 (T3, T6, T9, T12): 1, 4, 9, 16 (Squares of consecutive numbers)
The next three numbers will thus be 3, 20 and 25.
Hence, option (c).
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