I am a croupier who has three cards in a row (face down) on a table. 2 of them are aces, 1 is a joker. You don’t know the order.
Problem: With one question of a simple ‘yes’ or ‘no’ answer, determine with “absolute certainty” which of the three cards is an Ace.
But it’s not so easy-
if you point to any of the two Aces, the answer I will give you is always true. However, if you point to the Joker there’s a 50% chance that the answer is true, and a 50% chance that the answer is a lie.
Thanks to Suineg for submitting this brainteaser
(you can enter your answers below, will unmask Tuesday or Wednesday, thanks)