Calculate the number 4307
[8084] Calculate the number 4307 - NUMBERMANIA: Calculate the number 4307 using numbers [7, 7, 1, 9, 89, 508] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 0
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Calculate the number 4307

NUMBERMANIA: Calculate the number 4307 using numbers [7, 7, 1, 9, 89, 508] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
#brainteasers #math #numbermania
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It Takes A Long Time

Janice, my sister, had been pestering her husband, a carpenter, for more than a decade to build a screen door for the kitchen.
One day, to her delight, he built and installed one in less than two hours. It was both practical and pretty. She glanced towards the front door and wistfully remarked that one would look good there, as well.
"Are you kidding?" he gasped. "You can't just whip these things up, you know. It takes ten years to build a door like this."

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Parts standardization

In 1813, for the first time in the U.S., a requirement for standardization in factory production became part of a federal government contract which specified interchangeable parts. Twenty thousand pistols were ordered from the contractor, Col. Simeon North of Berlin, Conn. to be made such that "component parts of the pistols are to correspond so exactly that any limb or part of one pistol may be fitted to any other pistol of the 20,000." The contract price was $7 per pistol, to be delivered over a five year period. Since 1810, Col. North had already owned a pistol factory in Middletown, Conn., and produced the pistols at the rate of about 10,000 per year.
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