MAGIC SQUARE: Calculate A-B+C
[5851] MAGIC SQUARE: Calculate A-B+C - The aim is to place the some numbers from the list (1, 4, 10, 21, 22, 24, 29, 30, 64, 69, 72, 78) 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. - #brainteasers #math #magicsquare - Correct Answers: 15 - The first user who solved this task is Nílton Corrêa De Sousa
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MAGIC SQUARE: Calculate A-B+C

The aim is to place the some numbers from the list (1, 4, 10, 21, 22, 24, 29, 30, 64, 69, 72, 78) 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: 15
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #magicsquare
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An idiot was taking sky-diving...

An idiot was taking sky-diving lessons. The instructor explained that it was time for his first jump, and all he had to do was jump from the plane, count to six, and pull the rip cord. A truck would be waiting for him in the field where he would land.
The man jumped from the plane when he was told to, and counted to six. When he pulled the rip cord, the parachute wouldn't open. He tried the reserve chute and that didn't open.
Frustrated, he muttered to himself as he fell, "I'll bet the damn truck won't be waiting for me either."
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Royal Greenwich Observatory

In 1675, the Royal Greenwich Observatory was created by Royal Warrant in England by Charles II. Building designed by Sir Christopher Wren (who was also a Professor of Astronomy) was commenced 10 Aug 1675 and finished the following year by John Flamsteed was appointed as the first Astronomer Royal. Its primary uses were in practical astronomy - navigation, timekeeping, determination of star positions. In 1767 the observatory began publishing The Nautical Almanac, which established the longitude of Greenwich as a baseline for time calculations. The almanac's popularity among navigators led in part to the adoption (1884) of the Greenwich meridian as the Earth's prime meridian (0° longitude) and the international time zones.
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