Replace the question mark with a number
[3969] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 104 - The first user who solved this task is Djordje Timotijevic
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 104
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Three Vampires Go To A Bar

Three vampires walk into a bar and sit down at a table. The waitress comes over and asks the first vampire what he would like. The first vampire responds, "I vould like some blood."
The waitress turns to the second vampire and asks what he would like. The vampire responds, "I vould like some blood."
The waitress turns to the third vampire and asks what he would like. The vampire responds, "I vould like some plasma."
The waitress looks up and says, "Let me see if I have this order correct. You want two bloods and a blood light?"
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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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