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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I’m worried about your heart...

I’m worried about your heart murmur,” the doc told Jack. “I’ve always had a heart murmur,” Jack protested. “Yeah,” replied the doc, “but now the murmur has started humming.” “That doesn’t sound good!” Jack was getting worried now. “It’s worse than you think,” the doc said. “It’s humming ‘Nearer My God to Thee.’”
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Halley's comet

In 1758, the predicted return of Halley's comet was first sighted by German farmer and amateur astronomer, Johann Georg Palitzsch, as a faint object in Pisces. Edmond Halley had predicted in 1705 the return of the comet to the Earth's vicinity every 75.5 years. For the first time the scientific prediction had been proven. Halley himself had died 16 years before this new event. Palitzsch also observed the 6 Jun 1761 transit of Venus, when he saw a black band linking Venus and the Sun near the beginning and end of the transit ("black drop effect") and correctly interpreted this as evidence that Venus possessed an atmosphere. He also measured the period of the variation of the brightness of the star Algol.
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