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Find the next number: 3, 7, 15, 31, 63, ?
A120
B125
C129
D127
Answer & Solution
Correct answer: D. 127
1. Pattern: each term = 2 × previous + 1.
2. 3, 3·2+1=7, 7·2+1=15, 15·2+1=31, 31·2+1=63, 63·2+1=127.
3. Next term: 127.
_Source: TSICET 2024 PYQ Q.31 (Shift 1, Number Series)_
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