Find the next term: $3,7,15,31,63, ?$
Practice this question from Chapter Mock 13: Number Series, with options and an explanation.
Question
Find the next term: $3,7,15,31,63, ?$
Option A
111
Option B
121
Option C — Correct answer
127
Correct choice.
Option D
129
Explanation
Each term is doubled and $1$ is added: $3\to7\to15\to31\to63$, so next is $127$.