In the following question, select the missing number from the given series.
3, 7, 13, 27, 53, ?
- AOption (a)
107
- BOption (b)
111
- COption (c)
109
- DOption (d)
105
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Correct answer
107
Why this answer is correct
The relation between the numbers is as follows,
3 × 2 + 1 = 7
7 × 2 - 1 = 13
13 × 2 + 1 = 27
27 × 2 - 1 = 53
53 × 2 + 1 = 107
Hence, the next number is 107.






















