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

Two college classmates met for
Two college classmates met for the first time in years.
"How goes it with you, Pete?" asked one.
"Not good at all," mourned Pete. "My wife ran away with the mail man, my son is a juvenile delinquent, my bank failed, and all my teeth will have to come out."
"Gosh, I'm sorry to hear that," sympathized the classmate. "What business are you in now?"
"Some old line," answered Pete. "Selling good-luck charms."
"How goes it with you, Pete?" asked one.
"Not good at all," mourned Pete. "My wife ran away with the mail man, my son is a juvenile delinquent, my bank failed, and all my teeth will have to come out."
"Gosh, I'm sorry to hear that," sympathized the classmate. "What business are you in now?"
"Some old line," answered Pete. "Selling good-luck charms."