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Select the number from among the given options that can replace the question mark (?) in the following series.0, 6, 20, 42, ?
Question

Select the number from among the given options that can replace the question mark (?) in the following series.
0, 6, 20, 42, ?

A.

68

B.

86

C.

70

D.

72

Correct option is D

Given0, 6, 20, 42, ?
Logic: Difference between the number and + 8 in number.
6 - 0 = 6, 20 - 6 = 14, 42 - 20 = 22
The differences are: 6, 14, 22, ?
Each difference increases by 8:
6 + 8 = 14, 14 + 8 = 22, 22 + 8 = 30
So, the next difference should be 30.
Now, adding this to the last term:
42 + 30 = 72
Thus, correct option is (d).

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