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Q.

In each of the following questions a number series is given. Below the number series a number is given. This number is followed by A, B, C, D and E. Using the same pattern as in the original series answer the questions.

  8   12,  32,  108,  448,  2260

  3     A    B      C      D      E

What will be come in place of C ?

A 36
B 56
C 78
D 328
Answer & Explanation
Option: [D]

The pattern is x 1 + 4, x 2 + 8, x 3 + 12, x 4 + 16, x 5 + 20

So, 3 x 1 + 4 = 7

So, 7 x 2 + 8 = 22

So, 22 x 3 + 12 = 78

So, 78 x 4 + 16 = 328 which replaces C

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