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Fifty-Fifty Again? (Posted on 2017-06-14) Difficulty: 3 of 5
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?

See The Solution Submitted by Brian Smith    
Rating: 3.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Solution (spoiler) | Comment 2 of 3 |
(In reply to Solution (spoiler) by Steve Herman)

well done, it would seem you have this problem in the bag :-)
  Posted by Daniel on 2017-06-14 14:27:02

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