How old is Maria?
[2643] How old is Maria? - Maria's age plus three has an integer square root. Three years ago, Maria's age was the square root. How old is Maria? - #brainteasers #math #riddles - Correct Answers: 87 - The first user who solved this task is Donya Sayah30
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How old is Maria?

Maria's age plus three has an integer square root. Three years ago, Maria's age was the square root. How old is Maria?
Correct answers: 87
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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It was Christmas Eve. A woman...

It was Christmas Eve. A woman came home to her husband after a day of busy shopping. Later on that night when she was getting undressed for bed, he noticed a mark on the inside of her leg. "What is that?" he asked. She said, "I visited the tattoo parlor today. On the inside of one leg I had them tattoo 'Merry Christmas,' and on the inside of the other one they tattooed 'Happy New Year.'" Perplexed, he asked, "Why did you do that?" "Well," she replied, "now you can't complain that there's never anything to eat between Christmas and New Years!"
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Screw machine

In 1798, the first U.S. patent for a nut and bolt machine was issued to inventor David Wilkinson of Rhode Island. His machine for cutting screw threads incorporated a slide-rest, with a heavy carriage supported on three rollers Afterwards, his machine was operated by water power at Pawtucket Falls, RI. Wilson was a machinist who also produced iron forgings and castings for the cotton industry industry there, such as Slater's Mill. Wilkinson later produced a large general purpose lathe (1806), a pioneering advance that founded the American machine tool industry. [The first machine of importance for trimming the heads of nuts and bolts was invented later by Micah Rugg, who was issued U.S. patent No. 2,766 on 31 Aug 1842.]«
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