Calculate the number 3189
[2996] Calculate the number 3189 - NUMBERMANIA: Calculate the number 3189 using numbers [3, 4, 9, 6, 52, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 30 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 3189

NUMBERMANIA: Calculate the number 3189 using numbers [3, 4, 9, 6, 52, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 30
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Helping your father

A clergyman walking down a country lane and sees a young farmer struggling to load hay back onto a cart after it had fallen off.
"You look hot, my son," said the cleric. "why don't you rest a moment, and I'll give you a hand."
"No thanks," said the young man.
"My father wouldn't like it."
"Don't be silly," the minister said.
"Everyone is entitled to a break. Come and have a drink of water."
Again the young man protested that his father would be upset. Losing his patience, the clergyman said, "Your father must be a real slave driver. Tell me where I can find him and I'll give him a piece of my mind!"
"Well," replied the young farmer, "he's under the load of hay."

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Invention of navigation by satellite

In 1957, two Johns Hopkins University Applied Physics Laboratory scientists tracking Sputnik found they could determine its orbit by analyzing the Doppler shift of its radio signals during a single pass. They conjectured that if a satellite's position were known and predictable, then the Doppler shift of its signals could be used to locate a receiver on Earth - thus, one could navigate by satellite. A system called Transit, was developed and from 1964 assisted the security of U.S. nuclear deterrent submarines. From 1967, this evolved into a navigation system for all nations, a forerunner of the present Global Positioning System (GPS). Transit also made key contributions to space science and technology, geodesy and health.*[Image: Transit 1B satellite]
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