Question 59

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
1,3,7,13,21,?

Solution

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Consecutive even numbers are added.

1 + 2 = 3

3 + 4 = 7

7 + 6 = 13

13 + 8 = 21

21 + 10 = 31

=> Ans - (C)

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