Calculate the number 2286
[7211] Calculate the number 2286 - NUMBERMANIA: Calculate the number 2286 using numbers [1, 9, 3, 4, 81, 190] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 2
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Calculate the number 2286

NUMBERMANIA: Calculate the number 2286 using numbers [1, 9, 3, 4, 81, 190] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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A man goes to get his salary c...

A man goes to get his salary cheque and when he opens it he discovers that his employer has overpaid him by £2000.
He decides not to tell anybody and keeps quiet.
At the end of the following month when he opens the cheque, he sees that he's been underpaid by £2000.
Fuming, he goes to have it out with his employer. "Sir, I think you've made a mistake on my cheque."
"And how do you figure that?" his employer asks.
"It seems I've been underpaid by £2000."
"So?"
"No disrespect Sir, but I want my money."
"Last month I overpaid you by £2000 and you didn't complain so why now?"
"Well Sir, thing is I don't mind if you make a mistake once but if it becomes a habit I have to say something."
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Rock wool

In 1897, a rock wool factory in the U.S., the Crystal Chemical Works, was opened in Alexandria, Ind. Mineral wool had previously been made from blast furnace slag, but the new factory used local limestone rock in a process discovered by Charles Corydon Hall to create a sulphur-free product. The limestone was melted in a specially designed water-jacketed cupola, blown by steam pressure then allowed to cool to form fine threads. Its light, fibrous form resembled freshly-sheared sheep's wool. Being both insectproof and fireproof, rock wool was useful as a filtering material and as an insulating material for such uses as packing walls or for covering steam boilers. In 1929, the works became part of Johns Manville Corp.«
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