Lemma
MediumParadoxes
#456 · Probability · Paradoxes

The three prisoners

Of prisoners A, B, C, one (chosen uniformly) will be pardoned. A asks the guard to name one of B, C who will be executed (choosing at random if both will be). The guard says "B". What is now the probability that A is pardoned?

~6 minAnswer checked instantlyParadoxes

Classical — Martin Gardner (1959)

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