[ELI5] How to clearly explain the Monty Hall paradox

Imagine a deck of cards. Pull out one card and leave it face down. There's a 1/52 chance the card picked is the king of hearts. Now turn over all other cards except one ( you as the "host" knows the second one remaining face down is the king of hearts). Not one of the cards turned over is the king of hearts. Now your brother has to ask himself which one seems more likely to be the king of hearts. The one you picked randomly out of 52, or the one you "as a game show host" purposefully left out which now has a 51/52 chance of being the king. Would it be smart to stay with the first card or switch to the second card? Obviously the second. Maybe skewing proportions will help him understand! ASAP science did a video on this here!

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