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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Scary Flight

After waiting for what seemed like an eternity, the stewardess announces over the intercom that "we're just waiting for the pilots."

The passengers look out the window and see two men, dressed as pilots walking towards the plane. Both men are using guide dogs and appear to be blind. There are murmurs among the passengers, and some believe it is a joke.

The men board the plane and go into the cockpit. More concerned murmurs and uneasy chuckles from the passengers. The plane taxis normally to the runway and begins it's takeoff. As passengers look out the window they realize they are nearing the end of the runway. The entire passenger cabin begins screaming but the plane lifts off just before the end of the runway. The passengers calm down and chuckle to themselves, at this point believing that they fell for a joke.
In the cockpit, the pilot turns to his copilot and says "you know, one day those people are gonna scream too late and we're all gonna die!"

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Henry Gellibrand

Born 17 Nov 1597; died 16 Feb 1636 at age 38.English astronomer and mathematician who co-discovered (with John Marr) the geomagnetic secular variation. This refers to the magentic declination of the earth's magnetic field, the angle between magnetic north and true north, changing on a long-term time scale over years. He detected the direction of a compass needle in London had changed by seven degrees over a period of a half-century.He became professor of astronomy at Gresham College, London on 2 Jan 1627. His navigation textbooks helped improve English navigation at the time.Usingmanuscripts left unfinished whenhis friend Henry Briggsdied (1630), he completed volume two of Briggs'sTrigonometrica Britannica, in 1633.GellibrandpublishedA Discourse Mathematicall on the Variation of the Magneticall Needle, in 1635. He died the following year, at age 39.«[Image: Title page of Gellibrand's Discourse (1635).]
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