perplexus.info :: Probability : Attributed to Lewis Carroll

Attributed to Lewis Carroll (Posted on 2017-11-07)

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)

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Subject	Author	Date
2 scenarios: with and without replacement	Charlie	2017-11-07 14:19:37
re(2): Without replacement (spoiler)	Steve Herman	2017-11-07 13:35:32
re: Without replacement (spoiler)	Brian Smith	2017-11-07 12:52:31
Without replacement (spoiler)	Steve Herman	2017-11-07 11:59:51

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