Find the next number: 4, 9, 16, 25, 36, ?
Correct answer
C. 49
Why
The series is square numbers: 2^2, 3^2, 4^2, 5^2, 6^2, so next is 7^2 = 49.
RBI Assistant / Reasoning Ability
RBI Assistant Series practice questions
Try Series questions, then start the free Reasoning Ability mini mock.
47 practice questions
Answer explanations
Why each answer works
Sample practice
Series questions with answers
Backup practice: Find the next number: 4, 9, 16, 25, 36, ?
Correct answer
C. 49
Why
The series is square numbers: 2^2, 3^2, 4^2, 5^2, 6^2, so next is 7^2 = 49.
Find the next term in the series: 3, 7, 12, 18, 25, ?
Correct answer
B. 33
Why
Differences are 4, 5, 6, 7. The next difference is 8, so 25 + 8 = 33.
More practice
Build from this topic
Series topic drill
Practice this topic and see how it affects your next score.
- Questions
- 10
- Result
- Score breakdown
- Review
- Detailed
RBI Assistant Prelims full mock
A full-length RBI Assistant Prelims mock for exam-style practice.
- Questions
- 100
- Time
- 60 min
- Review
- Detailed
RBI Assistant Mains 40-question mini mock
Mini RBI Assistant Mains mock with instant score breakdown and topics to revise.
- Questions
- 40
- Time
- 27 min
- Review
- Detailed
RBI Assistant Mains full mock
A full-length RBI Assistant Mains mock for exam-style practice.
- Questions
- 200
- Time
- 135 min
- Review
- Detailed