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192, 384, 576

Math brain teasers require computations to solve.

 

Puzzle ID:#29985
Fun:*** (2.72)
Difficulty:*** (2.61)
Category:Math
Submitted By:kissA****

 

 

 



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 that also have this property?

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Answer

219 and 327.

Just swap 19 and 2, swap 27 and 3, and you'll get them.

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