In following number series, two terms have been put within brackets. Choose the appropriate option - Find the wrong number in the series :3, 8, 15, 24, 34, 48, 63

Answer: C. 34

The difference between consecutive terms of the given series are respectively 5, 7, 9, 11 and 13.
Clearly, 34 is a wrong number and must be replaced by (24 + 11) i.e. 35.
Hence, the answer is (c).