Calculate the number 812
[5748] Calculate the number 812 - NUMBERMANIA: Calculate the number 812 using numbers [1, 8, 1, 5, 35, 646] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 17 - The first user who solved this task is Nílton Corrêa De Sousa
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Calculate the number 812

NUMBERMANIA: Calculate the number 812 using numbers [1, 8, 1, 5, 35, 646] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #numbermania
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Mr. Jones is driving past the...

Mr. Jones is driving past the state mental hospital when his left rear tire suffers a flat. While he is changing the tire, another car goes by, running over the hub cap in which he was keeping the lug nuts. The nuts are all knocked into a nearby storm drain.
He is at a loss for what to do and is about to go call a cab when he hears a shout from behind the hospital fence, where one of the inmates has been watching the whole thing.
"Hey, pal! Why don't you just take one lug nut off each of the other three wheels and use them to replace the missing ones? That'll hold your tires on until you can get to a garage or something."
Mr. Jones is startled by the patient's seeming rationality, but realizes the plan will work, and installs the spare tire without incident. Before he leaves, he calls back to the patient. "You know, that was pretty sharp thinking. Why do they have you in there?"
The patient smiles and says, "I'm in here because I'm crazy, not because I'm stupid."
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Pin making machine

In 1832, a pin manufacturing machine was patented by John Ireland Howe (U.S. No. 2013). During the 19th century the American pin industry concentrated in the Naugatuck River Valley because Howe (1793-1876) built a plant in Derby, Connecticut, to make pins with the machine he invented to shape pins in one operation instead of the 18 separate steps required for hand production. He turned for mechanical help to Robert Hoe (who built printing presses.) His first working model of a machine that would make pins, though imperfect, was exhibited that year at the American Institute Fair in New York, where Howe received a silver medal. He improved the machine during the winter of 1832-33. Howe also invented a machine to stick the pins in paper packets.
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