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Calculate the number 2223

NUMBERMANIA: Calculate the number 2223 using numbers [4, 2, 7, 7, 94, 790] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 1

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Two quick ones...

Did you hear about the psychic amnesiac? He knew in advance what he was going to forget.

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Did you hear about the new restaurant that just opened up on the moon? Great food, but no atmosphere.

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Aleksandr Popov

Died 31 Dec 1905 at age 46 (born 4 Mar 1859).Russian physicist and electrical engineer acclaimed in Russia as the inventor of radio. He became an instructor at the Russian Navy's Torpedo School. Learning of Hertz's work, in 1895 Popov constructed an apparatus that could register electrical disturbances due to lightning. He applied it for receiving man-made signals. In 1896, he demonstrated a radiotelegraph system which transmitted Morse code. In Feb 1904, Popov first demonstrated radio transmission of the human voice. His invention was first used by the Russian navy. However, Russia's first radio factory was established by the Marconi company.

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