Free Logical Reasoning Test

A free, 20-question logical reasoning test in the style used by employers and aptitude exams — number and letter series, syllogisms, deduction and analogies. Instant score, a breakdown by question type, and an explanation for every answer.

By The TrainThinking Team · Educators & reasoning-assessment specialists · Updated June 17, 2026

20 questions · ~12 minutes · instant result

You'll answer 20 logical-reasoning questions across number and letter series, syllogisms, deduction and analogies. After each one you get the answer and a short explanation. Nothing is uploaded — only your score is saved on this device.

What a logical reasoning test measures

Logical reasoning tests are used by employers, universities and aptitude exams to gauge how well you spot patterns and draw valid conclusions — independent of specific knowledge. This free test mirrors the most common formats and scores each one separately so you can see exactly where to improve.

The question types, explained

TypeWhat it tests
Number seriesFinding the rule behind a sequence (doubling, primes, growing gaps…).
Letter seriesThe same pattern-spotting, using the alphabet.
SyllogismsJudging whether a conclusion strictly follows from two statements.
Logical deductionDrawing a valid conclusion from given facts and conditionals.
AnalogiesRecognising the relationship in one pair and applying it to another.

How to improve your score

Two habits help most. First, learn the common patterns — doubling, prime numbers, alternating steps, opposites and part-to-whole relationships recur constantly. Second, on syllogisms and deduction, ask whether the conclusion must be true, not merely whether it sounds plausible. Reviewing the explanation for every item — which this test gives you — is the fastest route to a higher score.

Logical reasoning and critical thinking

Logical reasoning is the formal, pattern-and-validity side of thinking; critical thinking adds judging evidence and assumptions in messier, real-world arguments. They reinforce each other — try both tests, then sharpen your weak areas with the exercises.

This test is for learning and self-assessment. It is not an official aptitude exam, IQ test, or employment-screening instrument; your result estimates your skill on these questions.

Frequently asked questions

What is a logical reasoning test?

A logical reasoning test measures how well you spot patterns and draw valid conclusions from given information. It typically mixes number and letter series, syllogisms, logical deduction and analogies — the same item types used in many job-aptitude and admissions exams.

What types of question are on a logical reasoning test?

The most common are: number series (find the next number), letter series, syllogisms (does the conclusion follow?), logical deduction (drawing valid conclusions from facts), and verbal analogies. This test covers all five and scores each separately.

How can I pass a logical reasoning test?

Learn the common patterns (doubling, prime numbers, alternating steps), check whether a conclusion strictly follows rather than merely sounds right, and practise under light time pressure. Reviewing the explanation for every item — as this test provides — is the fastest way to improve.

Is the logical reasoning test free?

Yes. It is completely free, needs no sign-up, and your answers never leave your browser — only your best score is stored locally so you can retake it.

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