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 Fifty-Fifty Again? (Posted on 2017-06-14)
I have three coins, like the coins from Fifty-fifty. The first coin is a regular coin with heads and tails sides; the second coin has heads on both sides; the third coin has tails on both sides.

Two coins are chosen and flipped, with the third still shrouded in a pouch. The results of the flips shows one head and one tail. What is the probability that the normal coin is the coin still in the pouch?

 Submitted by Brian Smith Rating: 3.0000 (1 votes) Solution: (Hide) The probability is 1/2. Steve explains in his comment.

Comments: ( You must be logged in to post comments.)
 Subject Author Date re: Solution (spoiler) hoodat 2017-06-15 12:46:35 re: Solution (spoiler) Daniel 2017-06-14 14:27:02 Solution (spoiler) Steve Herman 2017-06-14 09:12:06
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