Calculate the number 539
[5966] Calculate the number 539 - NUMBERMANIA: Calculate the number 539 using numbers [2, 4, 5, 5, 90, 357] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 15 - The first user who solved this task is Nílton Corrêa De Sousa
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Calculate the number 539

NUMBERMANIA: Calculate the number 539 using numbers [2, 4, 5, 5, 90, 357] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 15
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #numbermania
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A guy walks into a post office...

A guy walks into a post office one day to see a middle-aged, balding man standing at the counter methodically placing ''Love'' stamps on bright pink envelopes with hearts all over them. He then takes out a perfume bottle and starts spraying scent all over them. His curiosity gets the better of him and he goes up to the balding man and asks him what he is doing.
"I'm sending out 1,000 Valentine cards signed, 'Guess who?'"
"But why?'' asks the man.
"I'm a divorce lawyer."
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Edison patent

In 1924, Thomas A. Edison was issued a patent for a “Method of Producing Chlorinated Rubber” (U.S. No. 1,495,580), which claimed to be more economical than earlier methods. Natural rubber readily degrades and becomes brittle in the presence of oxygen or ozone in the air. Chlorine is used to replace some hydrogen atoms in the surface molecules of the rubber making it more stable. Edison's method treated very thin rubber strips in a chamber with chlorine gas mixed with the vapour of a highly chlorinated solvent of rubber such as carbon tetrachloride to soften the rubber surface for increased penetration by the gaseous chlorine, followed by other processing. In his patent, Edison envisioned further processing it with naphthaline and fillers, for use as a tough, hard veneer for phonograph records or cylinders.«
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