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Vandaag is het 22 April 2018

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Glovebox - logic puzzle

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Sue has six pairs of white gloves and six pairs of pink gloves in her drawer. In complete darkness, how many gloves should she at least take from the drawer in order to be sure to get a pair that match?

Explanation

She should take at least 13 gloves. That's because she could possibly take out 6 white left gloves and then 6 pink left gloves. The next one will than either be the right sock or left sock that matches.