SSC CGL Reasoning – Classification / Odd One Out – Level 2 · Exam Level · Tier I Sprint

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SSC CGL Reasoning – Classification / Odd One Out – Level 2 · Exam Level · Tier I Sprint – 13 questions, subject: General Intelligence & Reasoning. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Odd one outFind the odd one out: Barometer, Hygrometer, Anemometer, Telescope

Correct Answer: B [Telescope]

Explanation:

Function: a barometer, hygrometer and anemometer measure weather quantities (pressure, humidity, wind speed); a telescope is used to see distant objects.

2.  
Odd one outNOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.
Find the odd number: 303, 261, 171, 153

Correct Answer: A [303]

Explanation:

261 = 9 × 29, 171 = 9 × 19, 153 = 9 × 17 are multiples of 9; 303 = 3 × 101 is not.

3.  
Odd one outFind the odd letter group: BEH, LOR, NQT, GJN

Correct Answer: D [GJN]

Explanation:

Gaps +3, +3 in three groups; G7 J10 N14 has +3, +4.

4.  
Odd one outFind the odd one out: Hockey, Cricket, Football, Chess

Correct Answer: C [Chess]

Explanation:

Hockey, cricket and football are outdoor field games played by teams; chess is an indoor board game for two players.

5.  
Odd one outNOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.
Find the odd pair: (6, 216), (7, 343), (9, 729), (8, 64)

Correct Answer: A [(8, 64)]

Explanation:

Two-Agree Rule: 6³ = 216 and 7³ = 343, then 9³ = 729 ✓; but 8³ = 512, not 64 (64 = 8²).

6.  
Odd one outFind the odd letter group: BCE, FGI, NOQ, RSV

Correct Answer: D [RSV]

Explanation:

Gaps +1, +2 in three groups; RSV has +1, +3.

7.  
Odd one outFind the odd one out: Brave, Bold, Fearless, Timid

Correct Answer: B [Timid]

Explanation:

Meaning: brave, bold and fearless are near-synonyms; timid means the opposite (easily frightened).

8.  
Odd one outFind the odd number: 324, 144, 576, 242

Correct Answer: B [242]

Explanation:

324 = 18², 144 = 12², 576 = 24²; 242 lies between 15² = 225 and 16² = 256, so it is not a square.

9.  
Odd one outFind the odd letter group: CGE, KOM, QUS, PSQ

Correct Answer: A [PSQ]

Explanation:

C3 G7 E5, K11 O15 M13, Q17 U21 S19 → +4, −2; P16 S19 Q17 → +3, −2.

10.  
Trick SpotterIn 23, 67, 89, 91 the odd number is the only non-prime. Which single check finds it fastest?

Correct Answer: D [Divide 91 by 7]

Explanation:

91 = 7 × 13. Prime Pocket: below 121, test only 2, 3, 5 and 7.

11.  
Match the followingMatch each group with what its members have in common:
P. Bugle, Clarinet, Saxophone Q. Sarod, Cello, Sarangi R. Dholak, Ghatam, Kettledrum
1. string instruments 2. percussion instruments 3. wind instruments

Correct Answer: A [P-3, Q-1, R-2]

Explanation:

Bugle, clarinet and saxophone are blown (wind); sarod, cello and sarangi have strings; dholak, ghatam and kettledrum are struck (percussion).

12.  
Spot My Mistake“In 61, 83, 79, 57 all numbers are prime, so the odd one is 83 because it is the largest.” Which is the real odd number?

Correct Answer: D [57]

Explanation:

57 = 3 × 19 is not prime (digit sum 12 is divisible by 3); 61, 83 and 79 are prime.

13.  
Odd one outNOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits.
Find the odd set: (1, 6, 11), (3, 8, 13), (7, 12, 17), (2, 8, 14)

Correct Answer: B [(2, 8, 14)]

Explanation:

In three sets each number is 5 more than the previous; in (2, 8, 14) the step is 6.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Intelligence & Reasoning book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-intelligence-reasoning

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