Determine the value of the number ABCD
[708] Determine the value of the number ABCD - Determine the value of the number ABCD - #brainteasers #math - Correct Answers: 58 - The first user who solved this task is Djordje Timotijevic
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Determine the value of the number ABCD

Determine the value of the number ABCD
Correct answers: 58
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Halloween 2018 short jokes

What did the skeleton say to the vampire?
You suck.

What do ghosts use to wash their hair?
Sham-boo!

What kind of instrument do you play on Halloween?
A Spook-ulele.

What kind of key does a ghost use to unlock his room?

A Spoo-key

Why do skeletons have low self-esteem?
They have no body to love.

How do vampires get around on Halloween?
In blood vessels

What did the teenage witch ask her mother on Halloween?
Can i have the keys to the broom tonight.

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Nasir ad-Din al-Tusi

Died 26 Jun 1274 at age 73 (born 18 Feb 1201).Muhammad ibn Muhammad ibn al-Hasan al-Tusi was a Persian philosopher, scientist, mathematician and astronomer who made outstanding contributions in his era. When The Mongol invasion, started by Genghis Khan, reached him in 1256, he escaped likely death by joining the victorious Mongols as a scientific advisor. He used an observatory built at Maragheh (finished 1262), assisted by Chinese astronomers. It had various instruments such as a 4 metre wall quadrant made from copper and an azimuth quadrant which was Tusi's own invention. Using accurately plotted planetary movements, he modified Ptolemy's model of the planetary system based on mechanical principles. The observatory and its library became a centre for a wide range of work in science, mathematics and philosophy. He was known by the title Tusi from his place of birth (Tus).
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