ohnoorim ohnoorim

05-11-2014
Mathematics

Answered

Rob has 10 white, 8 red, and 6 blue socks in his drawer. If he selects socks from the drawer randomly, without looking, what is the least number of socks Rob must select to guarantee that he has removed a pair of white socks?

Answer :

Geekhawk Geekhawk

06-11-2014

There is a total of 24 socks
There are 10 white socks and 14 non white socks
[tex] \frac{15}{24} [/tex]
Since there are 14 non white socks, he must pick 15 socks for one guarenteed white sock

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