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

A man was in his front yard mowing grass when his neighbor came out of the house and went straight to the mail box, opened it, then slammed it shut, and stormed back in the house.
A little later they came out again went to the mail box and again opened it, then slammed it shut again.
Angrily, back into the house they went.
As the man was getting ready to edge the lawn, the neighbor came out again, marched to the mail box, opened it and then slammed it closed harder than ever. Puzzled by his neighbors actions the man asked, "Is something wrong?"
To which the neighbor (who was not very computer savvy) replied, "There certainly is! My stupid computer keeps giving me a message saying, "YOU'VE GOT MAIL!"