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

Not speaking...
Following an especially angry argument, Mr. and Mrs. Smith went to bed not speaking to each other. Needing to arise early the following morning, Mr. Smith left a note on his wife's bedside table that said "Wake me at six."
An exasperated Mr. Smith awoke at ten the following morning and rolled stiffly out of bed to see a note on his bedside table: "It's six, you bum! Get out of bed!"