Calculate a * b
[387] Calculate a * b - Calculate a * b - #brainteasers #math - Correct Answers: 27 - The first user who solved this task is Sanja Šabović
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Calculate a * b

Calculate a * b
Correct answers: 27
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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The children were lined up in ...

The children were lined up in the cafeteria of a Catholic elementary school for lunch.
At the head of the table was a large pile of apples.
The nun made a note, and posted on the apple tray:
"Take only ONE. God is watching."
Moving further along the lunch line, at the other end of the table was a large pile of chocolate chip cookies.
A child had written a note, "Take all you want. God is watching the apples.
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Paper folding machine

In 1856, the first practical U.S. folding machine to fold book and newspaper sheets was patented by Cyrus Chambers, Jr. of Pennsylvania (No. 15,842). It made three right angle folds to produce a sixteen page folded signature. The machine was installed in the Bible printing house of Jasper Harding & Son, Philadelphia, Pa. Although the accuracy of early folders was poor, with hand folding still predominating for better grade work, development of the folding machine after 1862 was rapid, and in 1873 a machine was patented that would fold a 16-page section and one of 8 pages, inset the latter, and paste it in place. That same year devices to cut and slit paper as it went through the machine were introduced.
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