Odd one out reasoning questions give you four or five items of which all but one share a property, and ask for the exception. Both forms the exam sets are here: word classification, where the property is meaning, and letter classification, where it is alphabet positions. Each walkthrough names the shared property in words before eliminating, which is the step that separates a decision from a hunch.
Download the PDF — 15 questions with answers
Free, ungated, no email. This is the odd one out reasoning questions with answers PDF — the same 15 questions as below, with every worked solution at the back, ready to print.
The 15 questions below are ordered the way an exam block is rather than easiest-first: two gentle openers, then a run of medium, and a hard one every sixth question — 2 of the 15 sit in the hard band. The set mixes classification (odd one out) and letter classification, in the round-robin the paper itself sets rather than one form at a time.
Work each question on paper before you open its solution. The walkthrough is the method itself, step for step, so reading it first turns a practice set into a reading exercise and teaches nothing. If you are stuck on the method rather than on one question, the method guide is a better place to start than the next question: Classification: find the shared property first.
Every question below was generated by the same engine that mints the Deduce daily puzzle round, and machine-checked before it reached this page — a multiple-choice question validates its own answer against its own options at generation, and ships only with a walkthrough attached. The walkthrough is the engine's own.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Four of these five letter clusters follow the same alphabet-gap pattern. Which one is the odd one out?
Check the gap between consecutive letters inside each cluster.
All five clusters span the same distance, so compare the individual steps.
Four of these five numbers are alike in a certain way and form a group. Which number does NOT belong to that group?
Most free practice for this topic is a scanned upload or a blog quiz, and neither can tell you a question has exactly one answer. That is the one thing this set can promise: it is minted, not typed. The engine behind it serves Deduce's daily puzzle round, so the questions here are the same shape as the ones a live round would give you — and there is an unlimited supply of them, which is why this page can be regenerated rather than padded.
If you want the method rather than more questions, Classification: find the shared property first covers the approach, the traps and a worked table. This page and that one deliberately answer different questions: that one is how do I solve these, this one is give me odd one out reasoning questions with the answers.
Then the property you found is not the intended one. Look for a second property that the other four share and the candidate does not. A well-set question has exactly one exception under exactly one property, so two apparent answers always means the property is wrong.
Convert each group to alphabet positions and read the gaps. Groups like BDF, JLN and PRT share the gap pattern 2-2; the odd one breaks it. Trying to see the pattern in the letters themselves is far slower and much less reliable than writing the numbers.
Usually yes. They need no diagram and no casework, so they run around twenty seconds each and bank marks early. The exception is a set built on obscure general knowledge, where no amount of reasoning helps — leave those rather than spending a minute on one mark.
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