## Tuesday, July 20, 2010

### Dressing in the Dark Again

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A drawer contains 4 blue socks, 6 gray socks, and 8 black socks. You randoml choose one sock, then another from the drawer. What is the probability that you choose 2 socks that match?

1. (4/18 x 3/17) + (6/18 x 5/17) + (8/18 x 7/17)
(12 + 30 + 56)/306
98/306
.3203...
~32% chance of choosing matching socks

2. Well my calculation are exactly the way Andy has done.
So naturally I arrived at the same answer. :)
www.guessthelogo.blogspot.com

3. The probability better be 100% unless ur Blind.

But the answer (since we are picking randomly... or randoml since I didn't spell check as well as I should have) is what Andy and guessthelogo said.

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