Calculate the number 6669
[5412] Calculate the number 6669 - NUMBERMANIA: Calculate the number 6669 using numbers [1, 5, 8, 5, 80, 817] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 25 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 6669

NUMBERMANIA: Calculate the number 6669 using numbers [1, 5, 8, 5, 80, 817] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Burglar's secret

A man walks into a police station and asks to speak to the burglar who broke into his house the night before.

"I’m sorry sir, but you'll get your chance in court,” says the duty officer.

“No, you don’t understand,” says the man. “I want to know how he got in the house without waking the wife. I've been trying to do that for years.”

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Wood pulp paper

In 1854, pioneering samples of basswood pulp paper made by John Beardsley were reported in the New York Daily Times which reprinted an article from the Democrat newspaper of Buffalo, New York. The article described three varied samples of the new paper that were shown to the editor of the Buffalo newspaper. Basswood is a tree of the linden family. Paper-making materials then in use included grasses, rag and flax. To transform wood into pulp, the cellulose fibres must be separated. Beardsley used a mechanical means of revolving cutters. A later history of paper-making book stated that his results were not successful. Earlier patents had been issued to other inventors for the processing of wood pulp for paper.«
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