What Makes a Coin ‘Fair’ in Probability?

A fair coin is one that has an equal chance of landing on heads or tails. Imagine flipping a coin, if it's fair, you have a 50% chance to get either side. But if the coin is heavier on one side, like when someone bends it, it might favor one outcome over the other.

Why It Matters

Fair coins are used in games and decisions because they make things more random. If you use a bent coin instead of a fair one, your game isn’t as fair anymore!

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Examples

  1. A bent coin might land on heads more than tails when flipped.
  2. Using a fair coin for a game gives both players an equal chance to win.
  3. A fair coin flip helps decide who goes first in a match.

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Categories: Math · Probability· Fairness· Coins