Calculate the number 2341
[637] Calculate the number 2341 - NUMBERMANIA: Calculate the number 2341 using numbers [7, 7, 2, 9, 83, 197] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 26 - The first user who solved this task is Sanja Šabović
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Calculate the number 2341

NUMBERMANIA: Calculate the number 2341 using numbers [7, 7, 2, 9, 83, 197] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 26
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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Writing letters to son

The following is supposedly a true story. To be included, besides being true, the story is most likely strange, weird, surprising, or funny.

One student fell into a cycle of classes, studying, working and sleeping.

Didn't realize how long he had neglected writing home until he received the following note:

"Dear Son, Your mother and I enjoyed your last letter. Of course, we were much younger then, and more impressionable. Love, Dad."

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Joseph Black

Born 16 Apr 1728; died 6 Dec 1799 at age 71. Scottish chemist and physicist who experimented with "fixed air" (carbon dioxide), discovered bicarbonates and identified latent heat. He lectured in chemistry, anatomy at the University of Glasgow, while also a physician. From heated magnesia alba (magnesium carbonate), Black collected a gas, carbon dioxide, different from common air. He published Experiments Upon Magnesia Alba, Quicklime, and Some Other Alcaline Substances (1756). Carbon dioxide was also released by fermentation, respiration, and burning charcoal so he assumed it was in the atmosphere. He also observed that ice melts without change of temperature, due to heat that becomes "hidden" - latent heat - and determined "specific heat" for heated of materials.[DSB gives date of death 6 Dec 1799. EB gives 10 Nov 1799.]
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