Find number abc
[7097] Find number abc - If 9b80a - 90ac7 = bbbb find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 9
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Find number abc

If 9b80a - 90ac7 = bbbb find number abc. Multiple solutions may exist.
Correct answers: 9
#brainteasers #math
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A little girl is sitting on he...

A little girl is sitting on her grandpa's lap and studying the wrinkles on his old face. She gets up the nerve to rub her fingers over the wrinkles. Then she touches her own face and looks more puzzled. Finally the little girl asks, "Grandpa, did God make you?"
"He sure did honey, a long time ago," replies her grandpa.
"Well, did God make me?" asks the little girl.
"Yes, He did, and that wasn't too long ago," answers her grandpa.
"Boy," says the little girl, "He's sure doing a lot better job these days isn't He?"
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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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