Give four people three mangoes and one orange, and almost anyone will instantly point at the orange. That instinct — spotting the thing that doesn’t belong — is exactly what odd man out questions with answers are testing, except the version on your exam paper swaps mangoes for number sequences, word pairs, and sometimes entire sentences hiding in a CAT VARC paragraph. If you’ve landed here looking for a clean set of odd one out questions and answers that actually explain the logic instead of just handing you an answer key, you’re in the right place.
Below you’ll find 30+ original odd one out questions and answers — numbers, letters, word classifications, analogy pairs, and CAT-specific odd sentence out questions — each solved with the reasoning spelled out, not just the final pick. There’s also a free downloadable PDF at the end if you’d rather practice offline.
What Exactly Is an “Odd Man Out” Question?
An odd man out (or odd one out) question gives you a group of items — numbers, letters, words, or sentences — where most of them share a hidden rule, and one doesn’t. Your job isn’t just to guess the outlier; it’s to figure out why the rest belong together. That skill — pattern recognition under time pressure — is precisely what makes this question type so common across competitive exams.
You’ll typically run into five flavours of it:
| Type | What It Tests | Example Pattern |
|---|---|---|
| Number series | Arithmetic/number properties | Primes, squares, cubes, multiples |
| Letter groups | Alphabet position logic | Fixed gaps, mirrored positions |
| Word classification | General knowledge & categorisation | Flowers vs. vegetables, mammals vs. fish |
| Word pairs (analogy-based) | Relationship logic | Tool:Action, Creator:Creation |
| CAT-style odd sentence out | Reading comprehension & coherence | One sentence breaks a paragraph’s flow |
Does CAT Actually Ask “Odd One Out” Questions?
Here’s where it’s worth being honest instead of just chasing the keyword: CAT doesn’t test classic number or letter “odd man out” puzzles the way SSC CGL or bank PO reasoning sections do. Where CAT genuinely tests this exact skill is in its VARC section, through odd sentence out questions — you’re given a short paragraph and asked to pick the one sentence that breaks the flow or doesn’t belong with the rest. The number, letter, and word-classification questions in this guide are still worth practising, though — they sharpen the same pattern-recognition muscle, and they show up directly in exams like SSC, IBPS, and XAT’s reasoning sections that many CAT aspirants also prepare for alongside CAT. For a full picture of where odd sentence out fits within CAT’s VARC paper, our CAT VARC syllabus breakdown is worth a read.
📥 Download the Free PDF: Want all 30+ odd one out questions and answers in one offline sheet? Grab the free CAT Odd One Out Questions PDF below and practice without needing an internet connection.
Number Series: Odd One Out Questions and Answers
Number-based odd man out questions almost always hinge on one of these: primes, squares, cubes, multiples, or a consistent difference/ratio between terms. Here are eight to work through.
| # | Question | Options | Answer | Explanation |
|---|---|---|---|---|
| 1 | Find the odd one: 2, 3, 5, 7, 9, 11 | — | 9 | All others are prime numbers; 9 = 3×3 is not prime. |
| 2 | Find the odd one: 4, 9, 16, 26, 36, 49 | — | 26 | All others are perfect squares (2², 3², 4², 6², 7²); 26 isn’t. |
| 3 | Find the odd one: 8, 27, 64, 100, 125, 216 | — | 100 | All others are perfect cubes (2³, 3³, 4³, 5³, 6³); 100 isn’t. |
| 4 | Find the odd one: 10, 15, 21, 28, 35, 45 | — | 35 | All others are triangular numbers; the correct term after 28 should be 36, not 35. |
| 5 | Find the odd one: 121, 144, 169, 190, 196, 225 | — | 190 | All others are perfect squares (11² to 15²); 190 breaks the pattern. |
| 6 | Find the odd one: 2, 6, 12, 20, 30, 41, 56 | — | 41 | Each term follows n(n+1); the term after 30 should be 42, not 41. |
| 7 | Find the odd one: 5, 10, 17, 26, 37, 49, 65 | — | 49 | Each term follows n²+1; the term after 37 should be 50, not 49. |
| 8 | Find the odd one: 7, 14, 28, 56, 112, 225 | — | 225 | Each term doubles the previous one; after 112, it should be 224, not 225. |
Letter & Alphabet Odd One Out Questions
Letter-based odd one out questions reward candidates who think in alphabet positions rather than just letter shapes. A, for instance, is position 1; Z is 26. Once you convert letters to numbers, the pattern usually jumps out.
| # | Question | Answer | Explanation |
|---|---|---|---|
| 9 | Find the odd one: CEG, FHJ, ILN, OQS | ILN | Each group skips one letter between positions (+2, +2); ILN breaks this since L to N is a +3, +2 gap instead of +2, +2. |
| 10 | Find the odd one: AC, EG, IK, MP | MP | Each pair has a 2-letter gap (A-C, E-G, I-K); M to P is a 3-letter gap. |
| 11 | Find the odd one: BDF, HJL, NPR, ADF | ADF | Each group skips one letter consistently (+2, +2); A to D is a +3 gap, breaking the pattern. |
| 12 | Find the odd one: DW, EV, FU, GS | GS | In each pair, the alphabet positions add up to 27 (D=4+W=23, E=5+V=22, F=6+U=21); G=7+S=19 adds up to only 26. |
Word Classification: Odd One Out Questions and Answers
This is the category most people associate with general “odd one out questions and answers” — four words, three of which share a category, one that doesn’t.
| # | Question (Find the odd one) | Answer | Explanation |
|---|---|---|---|
| 13 | Rose, Lily, Tulip, Potato | Potato | The rest are flowers; potato is a vegetable/tuber. |
| 14 | Guitar, Violin, Sitar, Flute | Flute | The rest are string instruments; flute is a wind instrument. |
| 15 | Jaipur, Lucknow, Bhopal, Agra | Agra | The rest are state capitals; Agra is not a capital city. |
| 16 | Whale, Dolphin, Seal, Shark | Shark | The rest are mammals; shark is a fish. |
| 17 | Wheat, Rice, Maize, Cotton | Cotton | The rest are food/cereal crops; cotton is a fibre crop. |
| 18 | Oxygen, Nitrogen, Hydrogen, Water | Water | The rest are elements; water is a compound. |
| 19 | Triangle, Square, Pentagon, Circle | Circle | The rest are polygons with straight sides; a circle has none. |
| 20 | Hockey, Cricket, Football, Chess | Chess | The rest are outdoor field sports; chess is a board game. |
| 21 | Mumbai, Chennai, Kolkata, Nagpur | Nagpur | The rest are coastal port cities; Nagpur is landlocked. |
| 22 | Hard Disk, RAM, CPU, MS Word | MS Word | The rest are computer hardware; MS Word is software. |
Word Pairs & Analogy-Based Odd One Out Questions
These questions test relationships, not just categories. Work out how each pair is connected before picking the one that doesn’t match the pattern.
| # | Question (Find the odd pair) | Answer | Explanation |
|---|---|---|---|
| 23 | Pen:Write, Knife:Cut, Needle:Stitch, Scissors:Paper | Scissors:Paper | The rest are Tool:Action pairs; Scissors:Paper is a Tool:Object pair. |
| 24 | Doctor:Hospital, Teacher:School, Judge:Court, Farmer:Tractor | Farmer:Tractor | The rest are Profession:Workplace pairs; Farmer:Tractor is Profession:Equipment. |
| 25 | Fish:Water, Bird:Sky, Lion:Jungle, Horse:Stable | Horse:Stable | The rest pair an animal with its natural habitat; a stable is a man-made shelter, not a natural one. |
| 26 | Author:Book, Sculptor:Statue, Singer:Song, Carpenter:Hammer | Carpenter:Hammer | The rest are Creator:Creation pairs; Carpenter:Hammer is Worker:Tool. |
CAT-Style Odd Sentence Out Questions
This is the format that shows up for real in CAT’s VARC section. Read each short paragraph and identify the one sentence that doesn’t belong with the rest in theme or flow.
27. Which sentence doesn’t fit?
- Urban green spaces do more than beautify a city skyline.
- Parks and tree-lined streets measurably lower local temperatures during heatwaves.
- Many metro rail projects have cut commute times by nearly 40 percent.
- Studies also link access to greenery with lower stress and better mental health.
- Cities investing in green cover are, in effect, investing in public health.
Answer: Sentence 3. The paragraph is about the benefits of urban green spaces; the sentence about metro rail commute times is unrelated to that theme.
28. Which sentence doesn’t fit?
- Electric vehicles are no longer a niche choice in Indian cities.
- Falling battery prices have brought EV costs closer to petrol alternatives.
- State subsidies have further sweetened the deal for first-time buyers.
- Traffic congestion in metro cities continues to worsen every monsoon season.
- Charging infrastructure, once a major concern, is expanding rapidly along highways.
Answer: Sentence 4. The paragraph builds a case for why EV adoption is rising; the sentence about monsoon traffic congestion breaks that thread.
29. Which sentence doesn’t fit?
- The rise of regional language content has quietly transformed Indian streaming platforms.
- Viewership from tier-2 and tier-3 cities now rivals that of metros.
- Several platforms have doubled their regional-language production budgets this year.
- Cricket remains the most-watched sporting event across every Indian demographic.
- This shift is prompting studios to cast more local, non-Bollywood talent.
Answer: Sentence 4. The paragraph tracks the growth of regional content on streaming platforms; the sentence about cricket viewership is off-topic.
30. Which sentence doesn’t fit?
- Microfinance institutions have extended credit to millions excluded from formal banking.
- Small loans, often under ten thousand rupees, fund modest ventures like tailoring or dairy.
- Studies show repayment rates among these borrowers often exceed those of larger loans.
- Gold prices have risen sharply over the past financial year.
- For many first-time borrowers, this credit access marks a genuine step toward financial independence.
Answer: Sentence 4. The paragraph is about microfinance and its impact on borrowers; the sentence about gold prices doesn’t connect to that theme.
📥 Download the Free PDF: If you’ve been solving along and want a printable version to revise from before your next mock, the free odd one out questions for CAT PDF below has all 30 questions plus a quick answer key on one page.
Quick Tips to Solve Odd One Out Questions Faster
- Check numbers for primes, squares, and cubes first — these three properties alone solve most number-series odd one out questions.
- Convert letters into their alphabet positions before looking for a pattern; it’s far easier to spot a broken +2 gap in numbers than in letters.
- For word classification, name the category out loud (“these are all flowers”) before picking the odd one — it stops you from second-guessing the obvious answer.
- For analogy pairs, state the relationship in words (Tool:Action, Creator:Creation) rather than just eyeballing the words.
- For CAT-style odd sentence out, read for topic drift, not grammar — the odd sentence is usually grammatically fine but talks about something else entirely.
If you want to build this kind of pattern-spotting speed systematically rather than question by question, our 1000+ free DILR practice sets are a good next stop — DILR leans on very similar logical thinking.
Summary
- Odd man out questions test your ability to spot a hidden rule and the one item that breaks it — across numbers, letters, words, pairs, or sentences.
- CAT doesn’t test classic number/letter odd one out puzzles directly, but its VARC section does test the same skill through odd sentence out questions.
- This guide covers 30+ original odd one out questions and answers across five categories, each with a worked explanation.
- A free downloadable PDF is available if you’d rather practice offline or revise on the go.
FAQs: CAT Odd One Out Questions
Q1. Does CAT actually ask odd man out questions?
Not in the classic number/letter puzzle format seen in SSC or bank exams. CAT tests the same underlying skill through “odd sentence out” questions in its VARC section, where you pick the sentence that doesn’t fit a short paragraph.
Q2. Where can I get CAT odd one out questions with a PDF?
This guide includes 30+ original odd one out questions and answers across numbers, letters, words, pairs, and CAT-style odd sentence out formats, with a free downloadable PDF at the end for offline practice.
Q3. What’s the easiest type of odd one out question to start with?
Word classification questions are usually the easiest entry point since they rely on general knowledge rather than calculation. Number series and CAT-style odd sentence out questions typically need more practice.
Q4. How are odd one out questions useful for CAT prep if CAT doesn’t ask them directly?
They build the same pattern-recognition and elimination skills used in CAT’s DILR and VARC sections, and they’re directly useful if you’re also preparing for SSC, bank, or XAT exams alongside CAT.
Q5. Is there a shortcut to solving number series odd one out questions quickly?
Checking for primes, perfect squares, perfect cubes, and a consistent difference or ratio between consecutive terms solves the vast majority of these questions within seconds once you’ve practised a few.
Conclusion
Odd one out questions look simple on the surface, but the real skill they build — quickly spotting the pattern everyone else follows and the one thing that breaks it — is exactly what CAT rewards in VARC’s odd sentence out questions and DILR’s pattern-based sets. Work through all 30+ questions above a couple of times, keep the free PDF handy for quick revision, and the pattern-recognition speed will start showing up in your actual mock scores.
📥 Download the Free PDF: Keep a printable copy of all 30+ CAT odd one out questions and answers handy — tap the download button above or below this article to save your copy.
Once you’ve got this reasoning type down, put it to work in a full-length setting — free CAT mock tests on CATMOCK let you practice under real exam conditions, and our guide on when to start CAT mocks will help you time your practice for maximum percentile gain.
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