Which number will replace the question mark in the following series 5 12 26 54 ........

Logical Resoning (CGL) Number series

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Which number will replace the question mark (?) in the following series?

5, 12, 26, 54, ?

This questions was previously asked in

SSC CGL 7 June 2019 Shift-2

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112

110

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Explanation:

The logic here is
12 - 5 = 7
26 - 12 = 14
54 - 26 = 28
The difference between consecutive numbers in the series is twice the previous difference. The next difference will be 56.
Let the required number = a
Similarly,
a - 54 = 56
a = 110
The required number = 110
Hence, the correct answer is Option C

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