Calculate the number 1281
[4666] Calculate the number 1281 - NUMBERMANIA: Calculate the number 1281 using numbers [2, 4, 1, 5, 72, 715] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 18 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 1281

NUMBERMANIA: Calculate the number 1281 using numbers [2, 4, 1, 5, 72, 715] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 18
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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The Watch

Little Johnny sees that his friend at school has a new watch so he asks him how he got it.
"I waited until I heard the bedsprings squeaking in my folk's bedroom and then I ran in. My father gave me a watch to get rid of me.", replied the little friend.
Little Johnny, thinking that this was a cool idea waited that night until he heard the bedsprings squeaking rhythmically and then ran into his folk's bedroom.
"What do you want!", asked the father gruffly.
"I want a watch!", said Johnny.
"Well sit down and shut up!", replied the father.     

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John Fillmore Hayford

Born 19 May 1868; died 10 Mar 1925 at age 56.American civil engineer and geodesist who established the modern science of geodesy, and made a precise determination of the ellipsoidal shape and size of the earth (1909). The International Union of Geodesy and Geophysics adopted Hayford's calculations in 1924. This International ellipsoid has a flattening of exactly 1 part in 297. The Earth's equatorial radius is 6,378,388 m. The radius along the polar axis is then 1/297 less than that or 6,356,912 m. (Surprisingly, the U.S. did not adopt this datum.) Hayford's theory of isostasy gave that the pressure exerted by the earth's crust is approximately the same over the entire globe, regardless of the nature of the surface (for example, lowlands or mountains). With modification, this theory is now used to explain phenomena within the crust. At the time of his death he was investigating the problems connected with evaporation and the water level of the Great Lakes.
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