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Mathematics 25 Online
OpenStudy (anonymous):

Your sock drawer holds 8 black, 4 tan, and 15 brown socks. Without looking, you grab one sock. find the probability the sock is not brown

OpenStudy (anonymous):

@bibby

OpenStudy (anonymous):

I would guess 12/27 but i'm not sure

OpenStudy (bibby):

\(\huge\frac{p(brown)}{p(total)}\)

OpenStudy (bibby):

wait why are there 15 brown socks

OpenStudy (bibby):

who has odd numbers of socks

OpenStudy (anonymous):

lol

OpenStudy (bibby):

anyhow assuming you meant 15/27, you're right. it can be simplified to 5/9

OpenStudy (anonymous):

I might since I mix-match anyway

OpenStudy (shinalcantara):

Since this involves combination then you'll have it as: \[\frac{ _{12} C_1 }{ _{27} C_1 }\]

OpenStudy (anonymous):

well there's 27 all together and 15/27 so then the probability of not getting brown is 12/27 or 4/9

OpenStudy (bibby):

what combinations? you're picking one

OpenStudy (anonymous):

Thnank you bibby

OpenStudy (bibby):

wait I misread the question. raven got it right

OpenStudy (anonymous):

what one of you got 5/9 one of you got 4/9

OpenStudy (bibby):

the probability of brown is 15/27 not brown is 12/27, sorry

OpenStudy (anonymous):

ok no prob

OpenStudy (anonymous):

thanks raven

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