Turn your sound on. A voice reads a run of digits at a steady pace — about one digit every six-tenths of a second — and the screen stays empty while it plays. There is no replay. After the last digit comes roughly a second of silence, and that silence is the most useful moment in the round: it is your one chance to rehearse. Then the keypad opens and you type the run backwards, digit by digit, with leading zeros kept. All or nothing — a nearly-right answer scores the same as a blank one. Pick a mode below and play the real module.
WIZZ AIR
TestAir360: Reverse Numbers
Independent preparation for the Reverse Numbers test in the Wizz Air Pilot Academy selection process. A voice reads four to six digits. Nothing appears on screen, the run is played once, and there is no replay. When it stops you type it back in reverse — first digit heard, last digit written — against a fifteen-second window. Fifteen rounds, no partial credit: a round is either entirely right or entirely wrong.
- Phone, tablet & PC
- Performance analytics
- Headphones required
Heard once.
Written backwards.
The rule takes one sentence and you will have it in the first round: the first digit you hear is the last one you write. That is not what the test measures. What it measures is that the rule asks you to do two different jobs at once — hold a run you cannot see, and then turn it round under a clock — on material that is played once and never comes back. Everything below follows from that: why the last second of silence matters more than the first, why a leading zero can cost a whole round, and why the twelfth correct answer is worth ten times the fifteenth. The five steps are the order in which they are worth learning.
One playback, and an empty screen
A voice reads the run once. Nothing is written anywhere on screen while it plays, there is no replay button, and the keys you press during playback are not counted. The shape of a round never changes: about a quarter of a second of lead-in, then the digits with a tenth of a second of silence between them, then a little under a second of silence at the end. That closing silence is not dead time — it is the only moment in the round when you have the whole run and nothing to do but repeat it to yourself. The keypad opens 350 ms after the sound stops, and if the audio ever fails to play the module opens the answer screen by itself rather than hanging.
Hold it. Turn it.
Under a clock.
A frequency, a squawk, a clearance limit: on the flight deck numbers arrive by voice, once, and often have to be worked on before they are written down. Reverse Numbers is that stripped to one screen — nothing to look at, one playback, and an operation between hearing and answering. What is measured is not memory on its own and not arithmetic on its own, but the two together while a window closes: how much you can hold, what survives being turned round, and whether it survives being rushed.
Heard once. Never written down.
Everything this test gives you arrives through one speaker and is gone. There is no transcript on screen, no replay button, and the keys you press while the voice is speaking are ignored. A round is a fixed shape: a short lead-in, the digits with a tenth of a second between them, and just under a second of silence at the end. That last second is the only part of the round you can spend rehearsing, and candidates who use it are measurably steadier on the six-digit runs than candidates who relax into it.
Holding is one job. Turning it round is another.
The rule is trivial and the work is not, because it asks for two things that compete: keep a run you cannot see, then read it back the other way while a window closes. Try to reverse while you are still listening and you drop digits; wait until the end and the clock is already running. Two details decide more rounds than the rule itself — a reversed run that starts with zero needs that zero typed, and repeated digits are ordinary rather than rare. There is no partial credit: one digit out of place scores exactly what a blank scores.
One pace, whatever the run.
The voice moves at a constant rate — speech plus silence put 590 ms between one digit and the next, a shade under two digits a second — and it does not speed up for long runs or slow down for hard ones. Individual digits do differ: the shortest takes 330 ms to say and the longest 580, so two runs of the same length can differ by a full second just because of their contents. That difference carries no information. Your answer window is identical either way, and a longer-sounding run is not a harder one.
The first twelve rounds carry the session.
The score is not a straight percentage. It fills across your first twelve correct rounds and then flattens hard: twelve right out of fifteen already scores 97, and the last three are worth three points between them. A penalty grows with the number of wrong answers and with how far accuracy has fallen, and a single mistake caps the session at 98. Two things follow. Protect the early short runs instead of gambling on the long ones at the end — and never leave an answer empty, because blank and wrong score the same.
Let every session write your next study plan.
Every session you finish is broken down automatically, and in this module the two panels worth opening first are accuracy by run length and the error classes. The first says where you hit the wall — four digits, five or six. The second says why, and the answers are genuinely different problems: a run written forwards is a lapse at the last step, an adjacent swap is an ordering slip in the middle, a short answer is usually the clock.
Accuracy by run length — where the wall is
Your four-, five- and six-digit rounds scored separately. Almost everyone has a length at which the run stops holding together, and the whole of your practice plan follows from knowing which one it is. Because the lengths always arrive in the same order, this panel also tells you whether the drop is length or fatigue.
Error classes, named rather than counted
Every wrong round is filed by what actually went wrong: the run written forwards, two neighbouring digits swapped, too few digits, too many digits, or nothing entered at all. A run written forwards is not bad luck — typing the exact order you heard by chance is a one-in-ten-thousand event on a four-digit run, so even one of them is a diagnosis.
Time to answer, and how much of the window you used
The seconds between the keypad opening and your submission, round by round, plus the share of the window you spent. Answering early wins you nothing — the session clock is measured against the rounds, not against you — so this panel is about whether haste is costing you accuracy.
Where in the run the digits were lost
The first digit of your answer is the last one you heard, and it is usually the safe one; the end of your answer is the beginning of the run, and that is where runs fall apart. Seeing that split is what turns “I keep getting sixes wrong” into something you can actually practise.
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What is the TestAir360: Reverse Numbers test in the Wizz Air Pilot Academy selection process?
It is an auditory working-memory test, and a round is as simple to describe as it is hard to do: a voice reads a run of four, five or six digits, and you type the run back in reverse. Nothing appears on screen while the voice is speaking, the run is played once, and there is no replay. The exam mode is fifteen rounds inside a five-minute session, with fifteen seconds to answer each one. There is no partial credit — a round is either completely right or completely wrong — and the digits arrive in a fixed order of difficulty: the four-digit rounds first, then the fives, then the sixes.
You need sound. What exactly will I hear?
A single voice reading digits at a constant pace. Speech and silence together put about 590 milliseconds between one digit and the next, so you hear a shade under two digits a second, and that pace never changes — longer runs are not read faster. Individual digits are not all the same length: the shortest takes 330 ms to say and the longest 580, which means two runs of the same length can differ by a full second purely because of which digits they contain. That tells you nothing about difficulty. What is worth knowing is the ending: after the last digit there is just under a second of silence before the keypad opens, and that silence is your one chance to rehearse the run before you have to produce it.
What actually counts as a correct answer?
The exact run, in reverse, complete. Two details catch people out. The answer is a run of digits rather than a number, so if the reversed run begins with a zero, that zero has to be typed — hearing six three one zero means answering zero one three six. And repeats are ordinary, not exceptional: measured over three million generated runs, about two in three contain a repeated digit and about one in three contain two of the same digit back to back. Those are precisely the runs where people lose count, and there is no credit for getting five of six digits right.
How do you type the answer, and can you correct a mistake?
With the on-screen keypad or the keyboard — whichever is faster for you, and for most people that is the keyboard. The keypad is laid out like a calculator rather than a phone: 7 8 9 on top, then 4 5 6, then 1 2 3, then delete, 0 and OK. You can delete and retype freely until you submit. Only Backspace deletes and it removes one digit at a time; there is no clear-all key and the Delete key is not wired up. Pressing the same digit again adds a second copy rather than removing the first, which is where a surprising number of too-long answers come from. Enter or OK submits, and when the window runs out whatever is on screen is submitted as it stands.
How is it different from the other Wizz Air tests?
CADETPRO ships a module for each of them and they ask for different things. Deductive logical reasoning fills a cell so a grid obeys stated constraints. Inductive logical thinking and inductive logical reasoning classify figures against a hidden rule. Logical thinking asks which one object of nine breaks a rule. Abstract logical reasoning continues a transformation across a row of panels. Diagrammatic reasoning gives you a matrix with a hole in it. Numerical reasoning gives you a data panel and one claim about it. Verbal reasoning gives you prose and one statement. Cube folding asks which of four cubes a flat net makes. ADAPT is six kinds of thinking in one sitting, and ADAPT: FAST Multitasking runs four jobs at once for three minutes. TestAir360: Compass is a single relationship between two marks on a rotated dial, and TestAir360: Clocks takes the dials off the screen before you answer. Reverse Numbers is the only one of them with nothing on screen at all.
Is the demo on this page the real module?
Yes. The player on this page loads the same build you get after purchase, straight from hub.cadetpro.com, and all four of its modes — EASY, MEDIUM, HARD and EXAM — open from the module’s own menu. Turn your sound on before you start, and use headphones rather than speakers: this is a listening test and background noise costs marks directly. EASY is the place to begin, because it is the only mode that shows you feedback — after every round it puts the run, the correct reversed answer and what you actually typed side by side, which is the only way to see which kind of mistake you are making.
What is the difference between the four modes?
How many rounds, how the run lengths are mixed, and how long you get to answer. EASY is twelve rounds weighted towards short runs with a twenty-second window, and it is the only mode with feedback. MEDIUM is fifteen rounds, five of each length, with a fifteen-second window and no feedback — the exam shape without the exam. HARD is deliberately harder than the exam: eighteen rounds, ten of them six digits long, and only ten seconds to answer. EXAM matches MEDIUM in shape and is the mode that is scored. In all four the lengths arrive in the same order, so the hardest rounds are always the last ones.
How is the score worked out, and what should I aim for?
The score builds across your first twelve correct rounds and then almost stops. Twelve right out of fifteen already scores 97; thirteen and fourteen both score 98; fifteen scores 100. A penalty grows with the number of wrong answers and with how far your accuracy has fallen, and a single mistake caps the session at 98, so 100 belongs only to a clean run. Two things follow directly. The early, shorter rounds are worth far more than the long ones at the end, so protect them rather than gambling. And never leave an answer blank — blank and wrong score exactly the same, so a guess costs you nothing and occasionally lands.
Is this an official Wizz Air product?
No. CADETPRO is an independent preparation platform and has no affiliation with, endorsement from or partnership with Wizz Air or any assessment provider. The module reproduces the publicly described format of the test so you can practise it; it is not the assessment itself, and no result here guarantees any outcome in a real selection process.