Find the next number: 5, 8, 13, 20, 29, ?
Correct answer
B. 40
Why
The differences are consecutive odd numbers: 3, 5, 7, 9, 11. Next term = 29 + 11 = 40.
RBI Assistant / Numerical Ability
RBI Assistant Number Series practice questions
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Number Series questions with answers
Find the next number: 9, 16, 25, 36, 49, ?
Correct answer
A. 64
Why
The terms are squares from 3^2 to 7^2, so the next term is 8^2 = 64.
Find the next number: 9, 17, 33, 65, 129, ?
Correct answer
D. 257
Why
Each term is previous term x 2 - 1. Next term = 129 x 2 - 1 = 257.
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