Calculate the number 504
[1321] Calculate the number 504 - NUMBERMANIA: Calculate the number 504 using numbers [1, 5, 8, 6, 51, 107] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 33 - The first user who solved this task is Sanja Šabović
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Calculate the number 504

NUMBERMANIA: Calculate the number 504 using numbers [1, 5, 8, 6, 51, 107] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 33
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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A Scottish lad and lass were s...

A Scottish lad and lass were sitting together on a heathery hill in the Highlands. They had been silent for a while, then the lass said, "A penny for your thoughts."
The lad was a bit abashed, but he finally said, "Well, I was thinkin' how nice it would be if ye'd give me a wee bit of a kiss."
So she did so.
But he again lapsed into a pensive mood which lasted long enough for the lass to ask him, "What are ye thinkin' now?"
To which the lad replied: "Well, I was hopin' ye hadn't forgot the penny!"
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Pen

In 1809, the first patent was issued in the U.S. for a metallic writing pen was issued to Peregrine Williamson a jeweller of Baltimore, Maryland. The patent title occurs in summary lists in published books that exist after the fire that consumed all the records at the Patent Office on 15 Dec 1836. Williamson's pens were made of steel rolled from wire, a sort of steel quill that would never need cutting to sharpen the nib. His first attempt did not write well for want of flexibility but that was solved by adding two more slits parallel to the main one. He then had a product that eventually sold so well it kept him and a journeyman employed full-time in a profitable business. There are references to steel pens being used in Britain before this patent.«
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