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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Frank J. Zamboni

Died 27 Jul 1988 at age 87 (born 16 Jan 1901).American inventor known for his invention of the Zamboni ice resurfacer used in ice skating rinks. In 1939, Zamboni was a partner in building Iceland Skating Rink in California, when maintaining the ice surface was very labor instensive and slow. At the time, a tractor dragging a scraper was used, with several workers removing shaving and manually finishing the surface. From Mar 1942, Zamboni began experimenting to find a better way. After several prototypes, by 1949, he had made improvements and had his Model A machine worthy of patenting (23 Jun 1953, U.S. No. 2,642,679). It combined the processes of scraping, removing shaving, and applying a wash water system. His idea drew requests from other rink operators. He began manufacturing, with continuing improvements in his design, and it became a familiar sight for ice hockey games.«
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