Calculate the number 8173
[6932] Calculate the number 8173 - NUMBERMANIA: Calculate the number 8173 using numbers [8, 5, 7, 4, 30, 620] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 11 - The first user who solved this task is Nasrin 24 T
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Calculate the number 8173

NUMBERMANIA: Calculate the number 8173 using numbers [8, 5, 7, 4, 30, 620] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania
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Great News

The day after a man lost his wife in a scuba diving accident, he was greeted by two grim-faced policemen at his door.

"We’re sorry to call on you at this hour, Mr. Wilkens, but we have some information about your wife."

"Well, tell me!" the man said.

The policeman said: "We have some bad news, some good news and some really great news. Which do you want to hear first?"

Fearing the worst, Mr. Wilkens said: "Give me the bad news first."

So the policeman said: "I’m sorry to tell you sir, but this morning we found your wife’s body in San Francisco Bay."

"Oh my god!," said Mr. Wilkens, overcome by emotion. Then, remembering what the policeman had said, he asked: "What’s the good news?"

"Well," said the policeman, "When we pulled her up she had two five-pound lobsters and a dozen good size Dungeness crab on her."

"If that’s the good news, then what’s the great news?" Mr. Wilkens demanded.

The policeman said: "We’re going to pull her up again tomorrow morning."

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Bolt trimming machine patent

In 1842, the first U.S. patent for a machine to trim the heads of nuts and bolts was issued to Micah Rugg (No. 2,766). In 1838, Rugg had a blacksmith shop where with Martin Barnes, he began making bolts and nuts for the market. Together, in 1840, they established the first U.S. nuts and bolts factory in Marion, Connecticut. It was a specially-designed one-story, 30 ft by 20 ft, wooden building where with six employees, their capacity production was 500 bolts a day. (Prior to 1838, when they started making bolts commercially, these articles were hammered out and hand-finished by blacksmiths. An earlier but impractical machinehad been patented by David Wilkinson of Rhode Island on 14 Dec 1798.)
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