MAGIC SQUARE: Calculate A+B*C
[6242] MAGIC SQUARE: Calculate A+B*C - The aim is to place the some numbers from the list (12, 13, 19, 20, 21, 27, 31, 32, 38, 61) 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: 11 - 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 (12, 13, 19, 20, 21, 27, 31, 32, 38, 61) 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: 11
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #magicsquare
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Black American patent

In 1897, a U.S. patent for an improvement in "Casting Composite or Other Wheels" was issued to black American inventor E.R. Robinson (No. 594,286). It gave a method for casting wheels wherein the outer sides are of one metal and the interior portions are of another metal. The importance was not only to enable casting a metal of high electrical conductivity, such as brass, in a groove of an iron trolley wheel - but also to permit an entirely new contruction consisting of two outer disks or flanges and an intermediate, uniting portion, which extends from the contact portion of the wheel with a web extending to the centre and an integral bushing. Robinson also held a previous patent, issued four years earlier, for an "electric railway trolley."[Image: plan view of bottom section of a wheel three-part mold]
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