Question

Identify the term that will replace the ?

3, 7, 15, ?, 63, 127

• A. 30
• B. 31
• C. 47
• D. 52

Answer 1

The correct option is B 31

Each number in the series is one more than twice the preceding number.
So,missing term =(15$\times$ 2)+1=3
Hence,option B is the correct answer.