All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars
 perplexus dot info

 Pairs of Socks (Posted on 2004-09-01)
You are in a pitch black room and need to get a pair of socks out of your drawer which can contain up to 100 socks. In the drawer is a mixture of black and white socks, and there's at least one pair of either color. If you choose two socks, the chance that you draw out a black pair is 2/3.

What is the chance that you draw out a white pair?
______________________________________________

Bonus: what would the answer be if the drawer contained between 100 and 1000 socks?

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

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: Solution to part 1 | Comment 10 of 20 |
(In reply to Solution to part 1 by Tristan)

I found three solutions, for increasing number of socks, and the probability of a white pair is always about 1/33.
Edited on September 1, 2004, 8:59 pm
 Posted by Federico Kereki on 2004-09-01 20:57:30

 Search: Search body:
Forums (0)