AonAptitude

Aon deductive reasoning practice (gap challenge)

A grid with most of it missing. Every cell you can fill is forced by the ones already there — the skill is finding which one to fill first.

Free to start. Every item is generated fresh, marked with a full worked solution, and ranked on a 1–9 stanine band that recalibrates as more candidates practise.

5

difficulty levels

3 min

timed run

0

guesswork required

What it measures

What Deductive Reasoning (gap challenge) is actually testing

Deductive reasoning here measures constraint propagation: given a partly filled grid where each symbol appears once per row and column, how efficiently do you find the cell that only has one possible occupant, and then the one that opens up next. There is never a step that requires a guess.

The format

How the real assessment runs

Format
A grid of symbols with cells removed. You place symbols back until the target cell is determined.
Timing
Short blocks. The difference between candidates is almost entirely route choice — a bad first move costs half the clock.
Difficulty
Higher levels remove more cells and lengthen the shortest chain, rather than adding new rules.
No guessing
Every puzzle is generated with a solver in the loop, so a forced chain to the answer is guaranteed to exist.

Where marks are lost

The trap that costs the most marks

Starting from the emptiest row because it looks like it needs the most work. The opening move should be the most constrained cell, not the most conspicuous gap. Our hint system exists for exactly this: it reveals, one figure at a time, the shortest chain that actually forces the target — so you learn to spot the entry point rather than being handed the answer.

Why practise here

What this practice gives you

01

Puzzles verified by an independent solver, so every one is provably solvable by elimination alone

02

The hint reveals the shortest chain step by step, teaching route choice instead of shortcutting it

03

Difficulty scales by removing cells and lengthening the forced chain — the way the real format gets harder

04

Levels are audited so that level 1 is genuinely easier than level 5, not just differently drawn

05

A stanine band so you can see whether your solving speed is competitive

Where you will meet it

Who uses this format

cut-e graduate batteriesAirline and aviation selectionEngineering and technical screeningAnalyst pipelinesEuropean volume hiring

Hiring stages where this format is commonly used. Persona Prep is not affiliated with Aon and does not reproduce their questions — we build practice in the same format, from our own generators.

With Persona Prep Pro

Everything you need to walk in ready

One subscription covers the whole assessment library, not just this exercise — because almost nobody is invited to sit only one module.

The full aptitude library

SHL Verify, Aon cut-e, Hogan and Saville formats — numerical, verbal, inductive, deductive, mechanical, checking and the interactive modules.

A rank, not just a score

Every run is placed on a 1–9 stanine band that recalibrates as the candidate pool grows, so you know your position.

A course per exercise

What it measures, the trap that costs marks, and worked items from every format — then the exercise itself.

Unlimited fresh items

Everything is generated, so you never run out and never memorise a bank.

Written + voice AI coach

Reads your results across exercises and tells you which two to fix first.

Personality practice too

SHL OPQ32, Hogan HPI/HDS/MVPI, Saville Wave, ADEPT-15 and 16PF, with full profile reports.

Deductive Reasoning (gap challenge)frequently asked questions

What is the Aon gap challenge?

It is Aon cut-e's deductive reasoning format: a grid of symbols with most cells removed, where each symbol appears once per row and column. You fill cells back in until the target cell is determined. Every step is forced by elimination — there is never a point where you have to guess.

How do you solve deductive reasoning grids quickly?

Start from the most constrained cell, not the emptiest row. Look for a row or column where only one symbol can legally go, place it, and let the consequences cascade. Choosing the wrong opening move is what costs candidates the clock, not the difficulty of any individual deduction.

Does this practice give hints?

Yes, and deliberately not by revealing the answer. The hint uncovers, one figure at a time, the shortest chain of deductions that actually forces the target cell, so you learn where the entry point was. Every puzzle is verified by an independent solver before it is served.

Start your Deductive Reasoning (gap challenge) practice

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