What is the missing number?
[5113] What is the missing number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 67 - The first user who solved this task is Djordje Timotijevic
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What is the missing number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 67
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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A blonde walks into the police...

A blonde walks into the police department looking for a job. The officer wants to ask her a few questions....
Officer: What's 2+2?
Blonde: Ummmmm... 4!
Officer: What's the square root of 100?
Blonde: Ummmm... 10!
Officer: Good! Now, who killed Abraham Lincoln?
Blonde: Ummmm... I dunno.
Officer: Well, you can go home and think about it. Come back tomorrow.
The blonde goes home and calls up one of her friends, who asks her if she got the job. The blonde says, excitedly, "Not only did I get the job, I'm already working on a murder case!"
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Roller skate

In 1869, Isaac Hodgson received a U.S. patent No. 88,711 for his “roller-skate,” with a padded shoe attached to the skate frame. The earliest known type, using two large wheels on each skate was invented by a Belgian, Joseph Merlin, in 1759. In England, Robert John Tyers, a Picadilly fruiterer, on 22 Apr 1823 patented his Volitos, an “apparatus to be attached to boots ... for the purpose of travelling or pleasure,” which used five small wheels in a single line. Somewhat similar skates with rollers were used to simulate ice skating in a scene of Meyerbeer's opera Prophète, Paris, 16 Apr 1849.* Another American inventor, James L. Plimpton of New York, had a patent for four-wheeled roller skates from 1863, whose right was affirmed at a trial for infringement, 28 Jan 1876.*
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