Updated May 19, 2026
Math Misconceptions
15 questions
Common errors, fake proofs, math myths debunked, and learning from mistakes
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Updated May 18, 2026
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is the probability of correctly guessing a multiple choice exam by random chance higher if you always choose C explain the psychology
Updated May 17, 2026
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if you flip a coin and get heads 10 times in a row what is the probability of tails on the 11th flip explained
Updated May 16, 2026
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i think i found a counterexample to the collatz conjecture can someone check my reasoning
Updated May 13, 2026
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is there a formula to find prime numbers or predict the next prime number
Updated May 6, 2026
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is the gamblers fallacy really a fallacy or does the law of averages eventually balance out
Updated May 6, 2026
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can someone finally explain the monty hall problem in a way that makes intuitive sense
Updated May 5, 2026
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why is the integral of 1 over x equal to natural log of absolute value of x not just natural log of x
Updated May 4, 2026
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my calculus teacher marked this limit question wrong but I think my answer is correct can you check it
Updated May 4, 2026
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why is the derivative of x to the power of x not x times x to the power of x minus 1 common calculus mistake
Updated Apr 30, 2026
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why is dividing by zero undefined and not infinity simple explanation
Updated Apr 27, 2026
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is 0.999 repeating exactly equal to 1 or just approximately equal explain the proof
Updated Apr 26, 2026
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if 0.999 repeating equals 1 then is 0.999 repeating 8 also equal to 0.999 repeating 9
Updated Apr 26, 2026
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is multiplication by juxtaposition implicit multiplication considered higher priority than regular multiplication
Updated Apr 25, 2026