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#1 2008-11-12 13:44:05
- asdfdfgd
- Guest
probability help
a messy sock drawer contains 3 black socks, 5 blue socks, and 8 white socks, none of which are paired up. if the you were to grab 2 socks without lookingm what is the probability that both will be white?
#2 2008-11-12 13:45:43
- Daniel123
- Member
- Registered: 2007-05-23
- Posts: 663
Re: probability help
The probability that the first one you pick is white is 8/16. The probability that the second one you pick is white, given that the first one was white, is 7/15. Multiply these two numbers together.
EDIT: I'm assuming this is without replacement.
Last edited by Daniel123 (2008-11-12 13:51:08)
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