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I randomly choose a pair of socks per day. I have 12 white socks and 18 black socks. What is the probability that I will have mis match socks

 Mar 11, 2020
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12/30  white sock first *   18/29    black c**k next       +      18/30 black sock fist  *  12/29  white sock next

 

216/870   +   216/870   =  432/870 = 72/145     (someone verify this ? )

 Mar 11, 2020

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