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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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Died 24 Jun 2003 at age 99 (born 19 Apr 1904).American ecologist who was founding president of the Nature Conservancy (1950), one of the nation's largest environmental organizations. He later helped develop the World Wildlife Fund. His training was in chemical engineering, but his lifelong passion was the outdoors. In the 1930s, he persuaded a New York socialite to raise money to buy Hawk Mountain, Pennsylvania, as a bird sanctuary to protect the hawks from devastation by hunters. In 1945, in the New Yorker magazine, he was one of the first to warn that DDT could drive fish, frogs, and birds extinct. He also fought for a law that banned the sale of rare-bird feathers for women's hats. He wrote the Audubon Bird Guide.

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