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What should come in place of the question mark (?) in the following series? 2, 6, 12, 20, ?
Question

What should come in place of the question mark (?) in the following series?
2, 6, 12, 20, ?

A.

40

B.

35

C.

30

D.

25

Correct option is C

Given:
2, 6, 12, 20, ?
Logic: The differences between the terms increase by +2.
6 − 2 = 4,
12 − 6 = 6,
20 − 12 = 8.
The next difference will be 10.
So, 20 + 10 = 30.
Thus, correct option is (C).

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