There are four three-digit n...
[4811] There are four three-digit n... - There are four three-digit numbers that share this property: the number itself, its double and its triple contain each digit from 1 to 9 exactly once. For example, 192 is one of them because 192, 384, 576 contain 1 to 9 each once. 273 is another one of them because 273, 546, 819 contain 1 to 9 each once. Can you find the other two numbers and calculate the product of these two numbers? - #brainteasers #math #riddles - Correct Answers: 23 - The first user who solved this task is Djordje Timotijevic
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There are four three-digit n...

There are four three-digit numbers that share this property: the number itself, its double and its triple contain each digit from 1 to 9 exactly once. For example, 192 is one of them because 192, 384, 576 contain 1 to 9 each once. 273 is another one of them because 273, 546, 819 contain 1 to 9 each once. Can you find the other two numbers and calculate the product of these two numbers?
Correct answers: 23
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Working in The Garden

A prisioner in jail received a letter from his wife:
"I have decided to plant some lettuce in the back garden. When is the best time to plant them?"
The prisioner, knowing that the prison guards read all the mail, replied in a letter:
"Dear Wife, whatever you do, DO NOT touch the back garden! That is where I hid all the gold."
A week or so later, he received another letter from his wife:
"You wouldn't believe what happened. Some men came with shovels to the house, and dug up the whole back garden."
The prisoner wrote another letter:

"Dear wife, NOW is the best time to plant the lettuce!"

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Kelly Johnson

Died 21 Dec 1990 at age 80 (born 27 Feb 1910).Clarence Leonard "Kelly" Johnson was an American aeronautical engineer who introduced introduced innovative designs. While managing Lockheed's secret project division, known as the “Skunk Works,” he contributed to more than 40 airplanes. His early work included the P-38 Lightning fighter (1938) and the Hudson bomber. Later, he developed the fastest supersonic and highest-flying airplanes in the world. The U-2 (1954) was the first plane designed for routine flight above 60,000 feet. The F-104 Starfighter interceptor (1954) was capable of flying at twice the speed of sound, setting world records of 1,400 mph and 103,000 ft altitude.«
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