Odd One Out Quiz
Practice quiz on Odd One Out (Numerical & Mental Ability). 10 exam-style questions with explanations.
About This Quiz
Odd One Out Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Find the odd one: 2, 3, 5, 9, 11
- A.2
- B.9
- C.11
- D.5
Show answer
Answer: B. 9
All others are prime.
Q2.Find the odd one: 16, 25, 36, 48
- A.48
- B.25
- C.36
- D.16
Show answer
Answer: A. 48
Others are perfect squares.
Q3.Find the odd one: 27, 64, 125, 150
- A.64
- B.150
- C.125
- D.27
Show answer
Answer: B. 150
Others are perfect cubes.
Q4.Find the odd one: 12, 18, 24, 29
- A.18
- B.12
- C.24
- D.29
Show answer
Answer: D. 29
Others are multiples of 6.
Q5.Find the odd one: 3, 9, 27, 81, 100
- A.81
- B.100
- C.9
- D.3
Show answer
Answer: B. 100
Others are powers of 3.
Q6.Find the odd one: 21, 35, 49, 51
- A.51
- B.35
- C.49
- D.21
Show answer
Answer: A. 51
Others are multiples of 7.
Q7.Find the odd one: 144, 169, 196, 200
- A.144
- B.169
- C.196
- D.200
Show answer
Answer: D. 200
Others are perfect squares.
Q8.Find the odd one: 11, 13, 17, 21
- A.13
- B.11
- C.21
- D.17
Show answer
Answer: C. 21
21 is not prime.
Q9.Find the odd one: 8, 27, 64, 100
- A.8
- B.27
- C.64
- D.100
Show answer
Answer: D. 100
Others are cubes.
Q10.Find the odd one: 2, 4, 8, 16, 18
- A.18
- B.2
- C.4
- D.16
Show answer
Answer: A. 18
Others are powers of 2.
Frequently Asked Questions
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How long does it take to complete Odd One Out Quiz?
Odd One Out Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Odd One Out Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Odd One Out Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Classification questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.