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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (2, 6, 11, 12, 15, 21, 64, 68, 74, 86) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B-C.

Correct answers: 21

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #magicsquare

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Dan St. Germain: Too Lazy to Kill

I could never be a serial killer because Im way too lazy to follow a pattern. I used to murder women that look like Grandmother but now -- mostly delivery men.

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Skywriting

In 1922, the first skywriting in the U.S. was demonstrated over Times Square, New York City, by Capt. Cyril Turner of the Royal Air Force. Flying at an altitude of 10,000 feet, he wrote letters in white smoke a half-mile high. The smoke was formed by oil, controlled by levers, dropped on the plane's hot exhaust pipe. The message in the sky was, Hello, U.S.A. Call Vanderbilt 7200. (Turner first used skywriting for advertising for a newspaper's name, Daily Mail,over England in May 1922.) In New York, Major Jack Savage was trying to sell this advertising idea to a skeptical George W. Hill, head of the American Tobacco Co. Savage had invited Hill to the Vanderbilt Hotel. Hill was convinced by the 47,000 telephone calls in less than 3 hours.

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