Optiver Beat The Odds
10 probability questions · 90 seconds per question
Fixed practice- +1 correct
- 0 incorrect
- 0 skipped
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About Optiver Beat the Odds
Optiver Beat the Odds is a probability and quantitative reasoning assessment used in Optiver's trading recruitment process. Candidates are assessed on their ability to analyse uncertain outcomes, apply probability concepts and make accurate decisions under time pressure.
The typical Optiver Beat the Odds format consists of 30 multiple choice questions with 90 seconds per question, giving candidates up to 45 minutes to complete the assessment. However, applicants have experienced different formats depending on the role and recruitment process.
Unlike traditional mathematical assessments, Beat the Odds places greater emphasis on probability intuition, expected value and decision making under uncertainty. Candidates must identify the correct mathematical approach quickly, evaluate possible outcomes and select an answer within a strict time limit.
What Questions Can You Expect?
Optiver Beat the Odds questions test a range of probability and mathematical reasoning skills. Problems frequently involve coins, dice, cards, random events and games of chance, requiring candidates to calculate probabilities, expected payouts or optimal decisions.
| Question type | Illustrative example |
|---|---|
| Probability | Find the probability of at least one six in four independent die rolls: 1 − (5/6)⁴ |
| Conditional probability | Update the probability of drawing a red ball after observing a draw without replacement |
| Expected value | A $4 ticket pays $12 with probability 1/3. Expected net profit: (1/3 × $12) − $4 = $0 |
| Stopping and waiting | Compare keeping a known payout with taking another roll, or calculate the expected waiting time until an event occurs |
How to Prepare for Optiver Beat the Odds
Focus on developing a strong understanding of probability, conditional probability, expected value, independence, sampling and optimal stopping decisions. These concepts form the foundation of many probability problems encountered in quantitative trading assessments.
Practise identifying the underlying probability model before attempting calculations. Techniques such as complementary probability, Bayes' theorem and linearity of expectation can simplify otherwise complicated problems.
With 90 seconds available per question, candidates must recognise an appropriate approach and complete their calculations efficiently. Some questions can be solved through straightforward probability calculations, while others require more creative reasoning or recognising a useful mathematical shortcut.
Regular practice with challenging probability questions is one of the most effective ways to prepare. Start by developing accuracy and mathematical intuition, then introduce timed practice to improve your ability to solve unfamiliar problems within 90 seconds.
Scoring Benchmarks
Correct answers earn +1, while incorrect, skipped and unanswered questions earn 0. The benchmarks below are based on percentage accuracy across the assessment.
| Accuracy | Performance |
|---|---|
| 80–100% | Strong performance |
| 60–79% | Good performance |
| 40–59% | Developing |
| Below 40% | Keep practising |
Frequently Asked Questions
What is Optiver Beat the Odds?
Optiver Beat the Odds is a probability and quantitative reasoning assessment associated with Optiver's trading recruitment process. It tests candidates' ability to analyse uncertain outcomes, calculate probabilities and expected values, and make decisions under strict time constraints.
How many questions are in Optiver Beat the Odds?
The commonly reported Optiver Beat the Odds format consists of 30 questions with 90 seconds per question, giving candidates up to 45 minutes. However, applicants have experienced different assessment lengths and formats with similar probability questions. EverythingQuant also provides a shorter 10 question, 15 minute free practice.
How difficult is Optiver Beat the Odds?
Optiver Beat the Odds is a challenging assessment because it combines mathematical reasoning with significant time pressure. Questions involving conditional probability, expected value and stopping decisions can require several steps or a creative approach. With only 90 seconds per question, candidates must identify efficient solutions rather than relying on lengthy calculations.
What kinds of questions should I prepare for?
Focus on probability, conditional probability, expected value, independent and dependent events, sampling without replacement, waiting times and optimal stopping decisions. Develop familiarity with common probability scenarios involving coins, dice, cards and games of chance. Understanding when to apply complementary probability, Bayes' theorem and linearity of expectation is particularly valuable.
How should I prepare?
Begin by building a strong foundation in probability and expected value. Practise solving unfamiliar mathematical problems without time constraints, then gradually introduce the 90 second limit. Review incorrect answers and focus on recognising shortcuts that make complicated probability calculations more manageable.
How is Optiver Beat the Odds scored?
EverythingQuant awards +1 for correct answers and 0 for incorrect, skipped or unanswered questions. Performance is measured using percentage accuracy across all questions. Scoring rules in Optiver's actual recruitment assessment may differ.
What does Premium include?
Premium unlocks complete randomised 30 question Optiver Beat the Odds assessments, with 90 seconds per question and up to 45 minutes per attempt. Each assessment generates fresh probability questions covering expected value, conditional probability, sampling and decision making. Signed in users can also access their saved results and assessment history.