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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (6, 11, 12, 24, 29, 30, 35, 40, 41, 52) 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: 0

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Demetri Martin: Exit Only

I saw a sign on this door; it said, Exit Only. So, I entered it and went up to the guy working there, and I was like, I have some good news. You have severely underestimated this door over here by, like, 100%, man.

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Johannes Nikolaus Tetens

Born 16 Sep 1736; died 17 Aug 1807 at age 70.German natural philosopher whose empirical approach strongly influenced the work of Immanuel Kant, and later in his life, Tetens became interested in mathematics, especially in actuarial applications. From 1760, as a teacher of natural philosophy he wrote on diverse topics but later began the development of the field of developmental psychology in Germany. He wrote Philosophische Versuche über die menschliche Natur und ihre Entwickelung (1777) on the origin and structure of knowledge. He changed career after 1789 to the civil service during which time he pursued mathematics. As a statistician he produced an Introduction to the Calculation of Life Annuities (1785) and On the Tetens Mortality Curve (1785).«

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