Replace the question mark with a number
[3058] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 378 - The first user who solved this task is Donya Sayah30
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 378
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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The Shredder

A young executive is working late one evening. As he comes out of his office about 8 PM he sees the Big Boss standing by the shredder in the hallway, a piece of paper in his hand. "Do you know how to work this thing?" the older man asks. "My secretary’s gone home and I don’t know how to run it."
"Yes, sir," says the young executive, who turns on the machine, takes the paper from the other man, and feeds it in.
"Now," says his boss, "I just need the one copy."  

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Perforated wrapping paper

In 1871, the first U.S. patent for perforated wrapping paper was awarded to Seth Wheeler of Albany, NY (No. 117,355). The paper was wound into rolls and could easily be torn off at the perforations. It was claimed that the fibers left between the perforations were sufficient for holding the sheets together as wound on the roll. In this way, the cost of cutting, counting and bundling stacks of pre-cut sheets was to be saved, together with making storage more convenient, and saving the paper from drying and becoming brittle by exposure to the atmosphere. Paper was already manufactured in rolls; only the step of perforation was added in its production, either with a row of holes or short cuts.
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