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If you have black socks and brown socks in your drawer mixed in a ratio of 4 to 5, how many socks will you have to take out to make sure that you have a pair the same color?

  • math -

    assuming you have full pairs, then the minimum number of socks is 8+10 = 18.

    So, you need to take out 9 socks to be sure there is at least one of each color.

  • math -


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