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Out of 100 ladies attending ...

Out of 100 ladies attending the dance, 85 had a white hand bag, 75 had black shoes, 60 carried an umbrella, 90 wore a ring. How many ladies must have had all four items?

Correct answers: 96

The first user who solved this task is Djordje Timotijevic.

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Birthday

Dad: - What do you want for your birthday?
Son: - I want a remote control car dad.
Dad: - Say no more son.

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Cast iron plow

In 1797, Charles Newbold, born Chesterfield, NJ (1780), was issued the first US patent for a cast-iron plow, at a time when the cast iron plow of James Small had to be imported from Scotland. On Newbold's plow the share, landslide and moldboard were cast in one piece, then wooden handles and beam added. Local farmers, though, rejected its use, fearing the iron might poison the soil! Eventually it was the improvements made by others that brought successful cast iron then steel plows to market.

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