perplexus.info :: Probability : Simpler probability problem?

Simpler probability problem? (Posted on 2015-08-11)

An urn contains 5 black and 20 white marbles. They are to be drawn one at a time until all of one color has been exhausted.

What is the probability that the color of the first draw correctly predicts the first color exhausted?

No Solution Yet Submitted by Jer

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Subject	Author	Date
re(2): I think I'm beginning to understand what Ady's saying	Charlie	2015-08-13 09:20:42
re: I think I'm beginning to understand what Ady's saying	Ady TZIDON	2015-08-13 01:03:53
I think I'm beginning to understand what Ady's saying	Charlie	2015-08-12 19:36:15
re(4): solution	Charlie	2015-08-12 14:46:30
simulation of 100 trials	Charlie	2015-08-12 12:27:43
re(4): solution	Charlie	2015-08-12 12:08:07
re(2): re. difficulty level	Ady TZIDON	2015-08-12 10:33:26
re(3): solution	Ady TZIDON	2015-08-12 10:27:16
re: re. difficulty level	Charlie	2015-08-12 08:57:18
re(2): solution	Charlie	2015-08-12 08:42:24
re: re. difficulty level	Jer	2015-08-11 23:13:00
re. difficulty level	Ady TZIDON	2015-08-11 22:20:59
re: solution	Ady TZIDON	2015-08-11 22:17:40
solution	Charlie	2015-08-11 15:56:22

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