What Makes a Coin Toss Fair or Unfair?

A coin toss is fair when both sides have an equal chance of winning. Imagine a coin that always lands on heads no matter how you flip it, that’s unfair! A fair coin has the same weight and shape on both sides, so it can land on either side equally often.

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Examples

A coin that lands on heads every time is unfair
A brand-new coin is usually fair
A bent coin might favor one side

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Categories: Math · probability,coins,mathematics