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Attributed to Lewis Carroll (Posted on 2017-11-07) Difficulty: 2 of 5
A bag contains one counter, known to be either white or black.
A white counter is put in, the bag shaken, and a counter drawn out, which proves to be white.
What is now the chance of drawing a white counter?

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solution2 scenarios: with and without replacementCharlie2017-11-07 14:19:37
re(2): Without replacement (spoiler)Steve Herman2017-11-07 13:35:32
re: Without replacement (spoiler)Brian Smith2017-11-07 12:52:31
SolutionWithout replacement (spoiler)Steve Herman2017-11-07 11:59:51
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