Probability Test

A timed multiple-choice probability test: expected value, Markov chains, combinatorics, conditional probability and betting games, each question on its own clock.

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You will face 6 multiple-choice probability questions, each with its own 90-second clock: answer, skip, or let the clock force the skip. Scoring is +1 for a correct answer, -1 for a wrong one and 0 for a skip. Some questions ask for the closest answer rather than an exact one.

90s per question 6 questions

You score +1 for each correct answer, -1 for each wrong answer and 0 for a skipped question. A blind guess loses points on average: skip unless you can eliminate enough options to make the attempt worth it. Your score is out of 6.

This is a short 6-question example. Premium members get the full 15-question test in 23 minutes.

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