192, 384, 576Math brain teasers require computations to solve.
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?
HintYes, it's EASIER than you think.
Answer219 and 327.
Just swap 19 and 2, swap 27 and 3, and you'll get them.
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