Calculate product...
[1731] Calculate product... - Calculate product of four consecutive prime numbers with the sum of 220. - #brainteasers #math - Correct Answers: 53 - The first user who solved this task is Sanja Šabović
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Calculate product...

Calculate product of four consecutive prime numbers with the sum of 220.
Correct answers: 53
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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World Post Day Jokes

On 9th October we celebrate World Post Day! Here's some postal humor for you:

What’s a postman’s favorite type of music?
Mail-ody!

Why did the feminist refuse to work at the post office?
Because it was a mail dominated industry

Have you heard about the dyslexic spy who got caught with a suitcase nuke in the post office?
Fission mailed!

So I got a phone call from the post office today...
...complaining that my dog is attacking a postman on a bike. But I told them "It can't be my dog... he doesn't even know how to ride a bike".

Did you hear that the Post Office just recalled their latest stamps?
They had pictures of lawyers on them ...and people couldn't figure out which side to spit on.

#worldpostday
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U.S. Naval Observatory

In 1842, the U.S. Naval Observatory was authorised by an act of Congress, one of the oldest scientific agencies in the U.S. James Melville Gilliss (1811-1865) is considered its founder, who in 1842 he secured the Congressional appropriation for the Depot of Charts and Instruments (est. 1830) to become the Naval Observatory. Its primary task was to care for the Navy's charts, navigational instruments and chronometers, which were calibrated by timing the transit of stars across the meridian. Initially located at Foggy Bottom, the observatory moved in 1893 to its present facility in Washington, DC. Gillis visited Europe to procure instruments, and the books that formed the core of the Naval Observatory Library. Matthew Fontaine Maury was the first director, followed by Gillis (1861-65).«[Image: domed portion of Foggy Bottom building, showing mast on which a ball dropped at noon as a visual signalofthe time. The structure had smaller wings on each side.]
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