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Temat: In English - Mind Puzzle
In your drawer are ten pairs of white socks, tenpairs of black socks, and eleven pairs of blue socks.
You can only take one sock from the drawer at a
time. All the lights are out and you cannot see what
color sock you are taking out. How many of your
socks do you need to take before you can be sure you
have at best one matching pair?
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