Trading firm online assessment practice
Timed mental math, number sequences and probability, the skills trading firms say they test.
Increase 120 by 30%
3 timed mocks · 9 free drills · 262 verified probability questions · new arithmetic and sequences every sitting
Practice by skill
Trading firms name three skills on their careers pages: fast mental math, number sequences and probability. Each has a guide, a timed mock and free drills.
Mental math
Mock: 80 questions in 8 minutes or 60 questions in 6 minutes or 50 questions in 5 minutes
- Timed mental math test
- Mental mathFree drill
- Fractions, decimals and percentagesFree drill
Number sequences
Mock: 26 questions in 25 minutes or 30 questions in 6 minutes
- Timed number sequences test
- Number sequencesFree drill
Probability
Mock: 18 questions in 30 minutes or 17 questions in 60 minutes
- Timed probability test
- Probability (mixed)Free drill
- CombinatoricsFree drill
- Dice, coins and cardsFree drill
- Conditional probabilityFree drill
- Expected valueFree drill
- EstimationFree drill
Sit a full timed test
Eighty arithmetic questions on an eight-minute clock, multiple choice or typed, with optional minus-one marking and a worked answer for every question. Sequences and probability mocks are included.
Or start with a free two-minute sprintWhat each firm says it tests
“Official” is what the firm states on its own careers pages. “Reported” is what candidates and prep sites describe; firms do not confirm it.
| Firm | Official | Reported by candidates | Practice |
|---|---|---|---|
| Optiver | Own assessment platform; one attempt every 8 months across all offices and roles; no calculators; practice mental math and strategy games. | A fast arithmetic section (the “80 in 8”), short games and probability questions. | |
| Maven Securities | Online assessments that can include numerical (mental maths), probability, HackerRank coding and Arctic Shores, depending on the programme. | About 50 arithmetic questions in 5 minutes and about 18 probability questions in 30 minutes with minus-one marking. | |
| Flow Traders | Graduate Traders take a numerical test of mental math and sequences skills. | 60 arithmetic questions in 6 minutes, then 26 sequences in 25 minutes, with a point lost for each wrong answer. | |
| SIG (Susquehanna) | Graduate trader postings list an online assessment of quantitative and problem-solving skills. | About 17 problems in 60 minutes: probability, statistics and logic, calculator allowed. | |
| IMC | Assessments vary by role; the recruiter explains the format beforehand; the test is “not to trick you.” | Inconsistent reports: arithmetic, sequences, probability and pattern tests in different years. | |
| Akuna Capital | No assessment details published. | 2027 cycle: a HackerRank test of 30 sequences and 30 betting-style probability questions on one 28-minute clock. 2026 cycle: 80 arithmetic questions in 8 minutes and a sequences test. | |
| PEAK6 | The published campus process includes an assessment before interviews. | Probability, expected value, logic and short mental math. |
How the practice works
- Mental math and sequence questions are generated fresh for every sitting with exact arithmetic, so a retake is never the same test.
- Probability questions come from a fixed bank of 262 original questions. Every answer was recomputed by brute-force enumeration, and every wrong option names the slip that produces it.
- Mocks run on one clock, one question at a time, with no going back. In the mental math and sequences mocks you choose multiple choice or typed answers, and minus-one marking or none; probability mocks are multiple choice with the marking of the format you pick.
- No firm publishes its question counts, timings or scoring. The timed formats below are what candidates and prep sites report for recent cycles; use them as practice settings and follow the instructions in your own invitation.
What this practice does not include
- Optiver’s actual sections, game set or scoring, including the games candidates call Zap-N. Optiver does not publish them.
- IMC’s and other firms’ market-making or trading games, and interview-stage trading exercises.
- Coding assessments on HackerRank.
- Any firm’s pass mark. None publishes one.
Maven Securities also uses Arctic Shores tasks, which we cover separately.
Common questions
Which trading firms test mental math, sequences and probability?
From their own careers pages: Optiver bans calculators and recommends mental math practice; Maven Securities runs numerical (mental maths) and probability assessments; Flow Traders tests mental math and sequences. Candidates report similar rounds at SIG, IMC, Akuna Capital and PEAK6, which publish less.
Are these the real tests?
No. Each firm runs its own assessment and none publishes its items, counts or scoring. Our questions are original and our timed formats follow what candidates report, labeled as such. Practice the skills, then follow the instructions in your invitation.
Do you simulate Optiver’s games (Zap-N) or IMC’s trading game?
No. Optiver does not name or describe its game battery, and the market-making games used in interviews cannot be reproduced honestly. We cover the skills firms name: fast arithmetic, sequences and probability. For risk and speed games, our pymetrics balloon game and Arctic Shores practice are the closest options.
What is free?
Every drill has one free attempt: two mental math sprints, a sequences drill and six probability drills. The trading tests pass unlocks the three timed mocks (mental math, sequences and probability) and unlimited drills.
How long do I have before my test?
Optiver allows one attempt every eight months across all offices and roles, and Maven allows one Emerging Talent application a year, so treat the first sitting as the one that counts. Practice before you open the invitation.
Ready for your online assessment?
Eighty arithmetic questions on an eight-minute clock, multiple choice or typed, with optional minus-one marking and a worked answer for every question. Sequences and probability mocks are included.
Or start with a free two-minute sprintFirm statements checked November 2026: Optiver Europe recruitment FAQ · Optiver Sydney campus recruiting FAQs · Optiver US campus recruiting Q&A · Maven Securities emerging talent · Flow Traders graduates · IMC recruitment process.
Optiver, Maven Securities, Flow Traders, Susquehanna International Group (SIG), IMC, Akuna Capital and PEAK6 are trademarks of their respective owners. Game Assessment Prep is an independent practice site and is not affiliated with, endorsed by or sponsored by any of these firms. Every question is original; none is taken from a firm’s assessment or another prep provider.