BRAIN TEASERS

enter your answer and press button OK

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

Register with your Google Account and start collecting points.

Check your ranking on list.

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Rufus Henry Gilbert

Born 26 Jan 1832; died 10 Jul 1885 at age 53.U.S. surgeon and inventor who played a major role in the development of rapid transit in New York City. After serving as a surgeon in the Federal Army in the Civil War, he became interested in rapid transit as a means of freeing people from living in the unhealthful, crowded tenements in the centres of large cities. Gilbert obtained two patents in 1870 on a pneumatic-tube system, and he incorporated the Gilbert Electric Railway Company on 17 Jun 1872, to build elevated lines in New York City. The cars were to be propelled by air pressure from pneumatic tubes mounted on the elevated structure. A financial depression delayed construction until 1876, and forced adoption of a conventional track with trains drawn by steam locomotives, which opened 6 Jun 1878.

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.