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.
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Punished
One day a little girl came home from school, and said to her mother, "Mommy, today in school I was punished for something that I didn't do."
The mother exclaimed, "But that's terrible! I'm going to have a talk with your teacher about this! By the way, what was it that you didn't do?"
The little girl replied, "My homework."