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Kevin is trying to find a white sock in his drawer. He has 16 white socks, 4 brown socks, and 6 black socks. What is the probability that he pull out either a black or brown sock, puts it back, and then pulls out a white sock?

 Aug 30, 2015
 #1
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Since there is a total of 26 socks, the probability of selecting a black or brown sock is 10/26.

The probability of selecting a white sock is 16/26.

The probability of selecting a black or brown sock first and then, with replacement, selecting a white sock is: 10/26 x 16/26  =  160/676   =  40/169  =  0.237

 Aug 31, 2015
 #2
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Since there is a total of 26 socks, the probability of selecting a black or brown sock is 10/26.

The probability of selecting a white sock is 16/26.

The probability of selecting a black or brown sock first and then, with replacement, selecting a white sock is: 10/26 x 16/26  =  160/676   =  40/169  =  0.237

 Aug 31, 2015

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