#190 · Probability · Paradoxes

Bertrand's boxes

Three boxes hold two gold coins, two silver coins, and one of each. You pick a box at random and draw a coin: it is gold. What is the probability the other coin in that box is gold too?

~4 minAnswer checked instantlyConditional probabilityCounting coins, not boxes

Classical — J. Bertrand, Calcul des probabilités (1889)

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