Quizzes
50 quizzes. 15 questions each. Pick a topic and start.
Choose a quiz
Choose a topic. Take it at your own pace.
Showing all 50 quizzes.
Mirror Patterns
Match reflected partners across vertical, horizontal and diagonal mirrors.
Start quiz→What Must Be True?
Separate necessary conclusions from guesses that merely sound plausible.
Start quiz→The Matching Room
Connect names, roles and objects using exclusions and shared constraints.
Start quiz→If, Then, What?
Read conditional rules carefully without reversing them or inventing guarantees.
Start quiz→The Constraint Lab
Combine small numerical and selection rules until only valid solutions remain.
Start quiz→Mental Rotations
Quarter-turns, half-turns and shapes that cannot be confused with their mirrors.
Start quiz→What Are the Chances?
Coins, dice and the famous three-door puzzle. Trust the sample space.
Start quiz→Coins and Streaks
Explore fair coins, streaks and the difference between a pattern and a prediction.
Start quiz→Draw Without Replacement
Track changing chances as cards, counters and tickets leave a collection.
Start quiz→Conditional Chances
Use the information you were actually given, with transparent sampling rules.
Start quiz→Expectation vs Intuition
Separate average outcomes from guarantees in small, fully specified games.
Start quiz→Spot the Better Deal
Compare fictional prices using unit rates, fees and the amount you actually need.
Start quiz→Kitchen Proportions
Scale recipes and compare mixtures using explicit units and simple ratios.
Start quiz→Saving Scenarios
Practise exact saving arithmetic with fictional fixed-rate examples and explicit timing.
Start quiz→Measure Before You Buy
Estimate fictional material quantities using areas, coverage and whole-pack rounding.
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Try “patterns”, “logic” or “probability”.
How the quizzes work
Follow the thought,
then see the why.
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Get your score out of 15 and a clear explanation for every answer.