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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A six-year-old boy called his...

A six-year-old boy called his mother from his friend Charlie's house and confessed he had broken a lamp when he threw a football in their living room.
"But, Mom," he said, brightening, "you don't have to worry about buying another one. Charlie's mother said it was irreplaceable."
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Metre

In 1983, the fifth legal definition of the metre was the the distance that light travels in a vacuum in 1/299,792,458 of a second. length of the meter was redefined at the 17th meeting of the international body Conférence Générale des Poids et Mesures (GCPM) by a method to give greater accuracy. It superceded the fourth legal definition adopted on 14 Oct 1960 based on a spectral line of kryton. Earlier definitions included the distance between marks on the international prototype metre bar made of platinum-iridium alloy (28 Sep 1889). Before that, the metre was decided that it should be one ten-millionth of the distance from the North Pole to the equator (1 Aug 1793), and the earliest concept was the length of a pendulum with a half-period of one second (8 May 1790).«
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