Logical Reasoning Test
A logical reasoning test measures your ability to spot patterns, draw valid conclusions and solve problems through structured thinking rather than prior knowledge. It covers verbal reasoning (syllogisms, statements and assumptions) and non-verbal reasoning (series, analogies and figures), and is a core part of most aptitude and placement screens.
Updated 2026-06-19 · 5 worked sample questions with answers · The interactive, scored tests run inside the OnJob app.
Key takeaways
- A logical reasoning test measures your ability to spot patterns, draw valid conclusions and solve problems through structured thinking rather than prior knowledge.
- A Logical Reasoning Test typically covers: Series and sequences, Syllogisms and deductions, Coding-decoding, Analytical puzzles.
- This guide includes 5 worked sample questions with answers — then rehearse under timed, scored conditions in OnJob's free mock tests.
What a logical reasoning test covers
Series and sequences
Identifying the rule behind number, letter or figure series and predicting the next term.
Syllogisms and deductions
Judging whether a conclusion necessarily follows from given statements.
Coding-decoding
Cracking the rule that maps letters or numbers to a coded form and applying it.
Analytical puzzles
Seating arrangements, blood relations, directions and ordering puzzles.
5 sample logical reasoning test questions with answers
Genuinely-correct, worked examples. Try each one before opening the answer, then practise the full set under timed, scored conditions on OnJob.
Q1.If CAT is coded as DBU, how is DOG coded?
Answer: Each letter shifts forward by one position in the alphabet (C→D, A→B, T→U). Applying the same shift to DOG gives E, P, H — so DOG is coded as EPH.
Q2.All cats are animals. Some animals are wild. Does it follow that some cats are wild?
Answer: No. All cats are inside the set of animals, but the wild animals need not include any cats. Without a guaranteed overlap the conclusion does not necessarily follow, so it is invalid.
Q3.Find the next term: 3, 6, 11, 18, 27, ?
Answer: The differences are 3, 5, 7, 9 — consecutive odd numbers — so the next difference is 11, giving 27 + 11 = 38.
Q4.Pointing to a photo, a man says, 'She is the daughter of my grandfather's only son.' Who is she to him?
Answer: His grandfather's only son is the man's own father, so the daughter of his father is his sister.
Q5.Complete the analogy: Hand is to Glove as Foot is to ?
Answer: A glove covers a hand, so the item that covers a foot is a sock (or shoe). The relationship is 'covering worn on', so the answer is sock.
How to prepare for a logical reasoning test
- 1
Learn to classify a question by type first — series, syllogism, coding or puzzle — because each type has a reliable method.
- 2
For syllogisms, sketch Venn diagrams; a conclusion is valid only if it holds for every possible diagram.
- 3
For series, always check the differences between terms, then the differences of those differences, before testing ratios.
- 4
Time yourself; reasoning questions are quick once you recognise the pattern, so do not over-think the easy ones.
- 5
Build a mental library of common patterns (squares, primes, alternating series) so you recognise them instantly.
Practise your logical reasoning test under real conditions
Reading worked answers is step one. Take a free, scored AI mock test on OnJob, see exactly where you stand, then apply to AI-matched jobs in one click.