Diophantus was a Greek mathe...
[4527] Diophantus was a Greek mathe... - Diophantus was a Greek mathematician who lived in the third century. He was one of the first mathematicians to use algebraic symbols. Most of what is known about Diophantus's life comes from an algebraic riddle from around the early sixth century. The riddle states: Diophantus's youth lasted one sixth of his life. He grew a beard after one twelfth more. After one seventh more of his life, he married. 5 years later, he and his wife had a son. The son lived exactly one half as long as his father, and Diophantus died four years after his son. How many years did Diophantus live? - #brainteasers #math #riddles - Correct Answers: 38 - The first user who solved this task is Fazil Hashim
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Diophantus was a Greek mathe...

Diophantus was a Greek mathematician who lived in the third century. He was one of the first mathematicians to use algebraic symbols. Most of what is known about Diophantus's life comes from an algebraic riddle from around the early sixth century. The riddle states: Diophantus's youth lasted one sixth of his life. He grew a beard after one twelfth more. After one seventh more of his life, he married. 5 years later, he and his wife had a son. The son lived exactly one half as long as his father, and Diophantus died four years after his son. How many years did Diophantus live?
Correct answers: 38
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
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Phil had just joined a club af...

Phil had just joined a club after his friend had recommended it (being a member for quite some time). They were sitting at the bar having their beers when someone yelled "21" and there was a small uproar of laughter. A few minutes later someone else yelled "34" and another roar of laughter rose up. Phil, confused about this asked his friend "Why is everyone laughing at the numbers being called out" His friend said, well we've been telling the same jokes for so many years that we just numbered them all and if you want to tell a joke you just call out a number" Phil nodded and said "Can I try?" His friend nodded and Phil called out "121" and everyone in the club roared with laughter and it didn't die down for at least another 15 minutes after. "Why did everyone laugh so hard at that joke?" Phil asked. His friend said with a small chuckle "We haven't heard that one before."
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Auguste Bravais

Died 30 Mar 1863 at age 51 (born 23 Aug 1811).French physicist and mineralogist, best remembered for his work on the lattice theory of crystals. Bravais lattices are named for him. In 1850, he showed that crystals could be divided into 14 unit cells for which: (a) the unit cell is the simplest repeating unit in the crystal; (b) opposite faces of a unit cell are parallel; and (c) the edge of the unit cell connects equivalent points. These unit cells fall into seven geometrical categories, which differ in their relative edge lengths and internal angles. In 1866, he elaborated the relationships between the ideal lattice and the material crystal. Sixty years later, Bravais' work provided the mathematical and conceptual basis for the determination of crystal structures after Laue's discovery of X-ray diffraction in 1911.
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