Quote:
Originally posted by chodadog
But if no boxes were removed, then it would simply be 1 in 3 chance of each one happening as there would be only be one possible outcome for choosing box A. But because a box is removed, there are 2 possible outcomes for box A. The fourth option would not exist if no boxes were removed and no switch option was given.
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But those 4 options don't have equal chances. Just because they're all there, doesn't mean they're all just as likely.