Calculate the number 8437
[6111] Calculate the number 8437 - NUMBERMANIA: Calculate the number 8437 using numbers [4, 9, 6, 7, 72, 578] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 11 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 8437

NUMBERMANIA: Calculate the number 8437 using numbers [4, 9, 6, 7, 72, 578] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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Walking on Water

A rabbi, priest, and a minister are out fishing in a boat on a big lake when the priest realizes that he has to go to the bathroom. Not wanting to disturb the fishing of the others in the boat by having them take him to shore, he gets out of the boat and walks across the water to do his business and then returns to the boat.A little while later the minister has to go also and he does the same. He walks across the water, does his business and returns across the water to the boat. Finally the rabbi feels the urge to go to the bathroom too, so he climbs out of the boat. But instead of walking across the water, he falls into the water and starts to wildly splash around. The priest and the minister finally drag the rabbi back into the boat and the priest turns to the minister and says, "Maybe we should have told him where the rocks were."
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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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