Diagrammatic Reasoning Test

Flowcharts, operators, sequences and process logic, in the formats employers actually set. Every question comes with a worked solution, so you learn to read operators at speed.

Free · No sign-up · Scored the moment you finish

Excellent, 4.8/5 · 148 reviews
Prepare for employers like
  • BBC
  • Deloitte
  • HSBC
  • Amazon
  • Google
  • NHS

What is a diagrammatic reasoning test?

A diagrammatic reasoning test measures how well you follow processes and rules shown as diagrams. Employers use it for roles that involve logic, processes or systems before interview. You are shown flowcharts or sets of operators that change an input, and you work out the output or the missing step, choosing the best answer from the options provided. It rewards tracking each rule in order without losing your place.

Free diagrammatic reasoning test

What's inside
3 easy 4 medium 3 hard

Start the free test. It opens full screen, without leaving this page.

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Download this test as a PDF or a second practice paper with different questions.

Worked solutions included. No sign-up.

Practise with the full pack

One test tells you the style. A pack gives you the pace: batches under time pressure, marked, with the working shown.

11
Diagrammatic Reasoning tests
110
questions, all solved

Types of diagrammatic reasoning question

Most tests are built from three question formats. Each guide below covers one, with practice questions.

Sequencing

Follow a sequence of diagrams and work out which one comes next.

Practise sequencing questions

Similar shapes

Work out the rule a set of shapes shares, then pick the shapes that follow it.

Practise similar shapes questions

Unfolded shapes

Fold and unfold nets and punched patterns in your head.

Practise unfolded shapes questions

Operators

A symbol stands for a fixed change. Deduce what each one does, then apply the chain.

How operators work

Input and output

Name every single thing that changed between input and output; the rule is that complete list.

How input-output questions work

Comparing sets

Find the one feature every diagram in a set shares, then place the new diagram.

How comparing sets works

How are diagrammatic reasoning tests scored?

Most employers score you against other candidates, not against a fixed pass mark: your raw score becomes a percentile. Attempting questions matters, because most tests are built so few candidates finish, and guessing usually pays: negative marking is rare, but check the instructions.

Practice Aptitude Tests · Original data

How our test takers score

Results from every test in our Diagrammatic Reasoning pack, past and present.

605,579completed sittings · 2026 edition

Key finding59% of Diagrammatic Reasoning test takers score 80% or more.

Average score74%Half scored 80% or more
Top quarter scored90%+The 75th percentile
Full marks1 in 6of sittings scored 100%
Gain from practice+4 ptsFirst test to fifth test

How scores spread

59% scored 80% or more, and 8% scored under 40%.

2%0–196%20–3910%40–5923%60–7959%80–100

Share of sittings in each score band.

Practice pays

Regular practisers went from 78% on their first test to 82% on their fifth.

78%1st test79%2nd test82%3rd test82%4th test82%5th test

15,590 people who took five or more tests.

Does speed help?

Speed makes little difference here.

Quickest quarter71%
Slowest quarter74%

Typical pace: 40 seconds a question.

Source: Practice Aptitude Tests · 605,579 completed sittings · 2026 edition, 14 October 2026

Every completed sitting of every test this pack holds or has held. Practice results, not employer pass marks. Free to reuse with credit. Compare every pack

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Video tutorials

The methods behind the questions above, from our team