Calculate the number 8207
[8119] Calculate the number 8207 - NUMBERMANIA: Calculate the number 8207 using numbers [5, 9, 7, 3, 23, 919] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 1
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Calculate the number 8207

NUMBERMANIA: Calculate the number 8207 using numbers [5, 9, 7, 3, 23, 919] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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A man has to leave the country...

A man has to leave the country on business and he entrusts with his best friend the job of keeping an eye on his wife. If anything out of the ordinary should occur, he was to be notified immediately.
After about a week of no news the business man received a telegram: "The man who comes to visit your wife every night didn't show up yesterday..."
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Simon Marius

Born 20 Jan 1573; died 26 Dec 1624 at age 51.(Also known as Simon Mayr) German astronomer, pupil of Tycho Brahe, one of the earliest users of the telescope and the first in print to make mention the Andromeda nebula (1612). He studied and named the four largest moons of Jupiter as then known: Io, Europa, Ganymede and Callisto (1609) after mythological figures closely involved in love with Jupiter. Although he may have made his discovery independently of Galileo, when Marius claimed to have discovered these satellites of Jupiter (1609), in a dispute over priority, it was Galileo who was credited by other astronomers. However, Marius was the first to prepare tables of the mean periodic motions of these moons. He also observed sunspots in 1611.«[DSB gives date of birth 20 Jan 1573. EB gives 10 Jan 1573.]
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