Calculate the number 1817
[6709] Calculate the number 1817 - NUMBERMANIA: Calculate the number 1817 using numbers [4, 4, 5, 4, 68, 475] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 9 - The first user who solved this task is Nasrin 24 T
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Calculate the number 1817

NUMBERMANIA: Calculate the number 1817 using numbers [4, 4, 5, 4, 68, 475] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 9
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
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Worms

Little Johnny watched the science teacher start the experiment with the worms. Four worms were placed into four separate jars.
The first worm was put into a jar of alcohol
The second worm was put into a jar of cigarette smoke.
The third worm was put into a jar of sperm.
The fourth worm was put into a jar of soil.
After one day, these were the results:
The first worm in alcohol - dead.
Second worm in cigarette smoke - dead.
Third worm in sperm - dead.
Fourth worm in soil - alive.
So the Science teacher asked the class - "What can you learn from this experiment."
Little Johnny quickly raised his hand and said - "As long as you drink, smoke and have sex, you won't have worms."      

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Auguste Bravais

Born 23 Aug 1811; died 30 Mar 1863 at age 51.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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