In the dark
One night, when my uncle Emil was reading a book in the living room, his wife turned off the light and the living room became completely dark. However, my uncle continued reading. How is this possible?
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Emil is blind; reading Braille.
The engineering department was arranging for a rather expensive catered lunch to bid farewell to their retiring colleague. They calculated that it would cost each person $30. One good mathematician remarked, "It's lucky that there aren't five fewer of us to split the...