Calculate the number 258
[5716] Calculate the number 258 - NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 14 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 258

NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Breeding Bulls

My wife and I went to the County Agricultural Show and one of the first exhibits we stopped at was the breeding bulls. We went up to the first pen and there was a sign attached that said:
THIS BULL MATED 50 TIMES LAST YEAR
My wife playfully nudged me in the ribs ..... Smiled and said, "He mated 50 times last year, that's almost once a week".
We walked to the second pen which had a sign attached that said:
THIS BULL MATED 150 TIMES LAST YEAR
My wife gave me a healthy jab and said, "WOW~~That's more than twice a week! .......... You could learn a lot from him".
We walked to the third pen and it had a sign attached that said:
THIS BULL MATED 365 TIMES LAST YEAR
My wife was so excited that her elbow nearly broke my ribs, and said, "That's once a day .. You could REALLY learn something from this one".
I looked at her and said, "Go over and ask him if it was with the same cow".
My condition has been upgraded from critical to stable and the doctors say I should eventually make a full recovery.
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Sir Cyril Norman Hinshelwood

Born 19 Jun 1897; died 9 Oct 1967 at age 70. English physical chemist who worked on reaction rates and reaction mechanisms, particularly that of the combination of hydrogen and oxygen to form water, one of the most fundamental combining reactions in chemistry. For this work he shared the 1956 Nobel Prize for Chemistry with Soviet scientist Nikolay Semyonov. Other important chain reactions are the combustion of carbon monoxide and of hydrocarbons. When it seemed that almost all reactions were chain reactions, one might believe the simpler mechanisms previously thought of were exceptions. But Hinshelwood found substances which could simultaneously react in two ways, one part reacting by a chain mechanism and at the same time the rest reacting in the old-fashioned way.
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