Exams › SSC CGL (Prelims) › General

Identify the term that should replace the question mark: 3, 7, 15, 31, ?

1. 47
2. 63
3. 61
4. 64

Correct answer: 63

Solution

The sequence follows the pattern of adding 4, 8, 16, ... which doubles each time. So the next addition is 32, giving 31 + 32 = 63.

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