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3, 7,15,?,63,127...

3, 7,15,?,63,127

A

30

B

31

C

47

D

52

Text Solution

Verified by Experts

The correct Answer is:
B
Each number in the series is one more than twice the preceeding number.
So, missing term = `(15 xx 2) + 1 = 31`
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