Calculate the number 877
[6076] Calculate the number 877 - NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 17 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 877

NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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An enormously wealthy 65-year-old...

An enormously wealthy 65-year-old man falls in love with a young woman in her twenties and is contemplating proposing.
"Do you think she'd marry me if I tell her I'm 45?" he asked a friend.
"Your chances are better," said the friend, "if you tell her you're 90."
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Perkin patent for aniline dye

In 1856, William Henry Perkin, an English chemist, applied for a British patent titled "Dyeing Fabrics" for his invention of aniline dye "producing a new coloring matter for dyeing with a lilac or purple color stuffs of silk, cotton, wool or other materials." It was sealed on 20 Feb 1857. This was the first synthetic dye, which he obtained at first unintentionally from coal tar (a by-product of coal gas production) while seeking a method to prepare the anti-malarial drug quinine from that source. Perkin was just 18 years old. With help from his father and brother, he began manufacturing the dye, which he called Tyrian purple. Within a few years, he was wealthy and in in 1873 sold the business to turn to chemistry full-time.«
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