The next number of the sequence 3, 7, 15, 31, 63,

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The next number of the sequence 3, 7, 15, 31, 63, ? is

1. 95
2. 111
3. 123
4. 127

Correct Option: D

The pattern of the sequence is:
3 + 4 = 7
7 + 8 = 15
15 + 16 = 31
31 + 32 = 63
63 + 64 = ?
∴ ? = 127
Thus , The next number of the sequence is 127.