another puzzler
The "Let's Make a Deal" paradox has been argued about for decades.
The correct answer is that changing your selection is statistically likely
to result in getting the "good" prize 2/3 of the time.
The simplest explanation is that the contestant chooses a curtain with a bad
prize 2/'3 of the time, and the host always reveals one of the bad prizes
behind a different curtain. Ergo, 2/3 of the time the good prize is behind
the unchosen/unopened curtain, and you should switch.
QED.
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