BRAIN TEASERS

enter your answer and press button OK

Find number abc

If 6a72c + c1bcb = 11c77c find number abc. Multiple solutions may exist.

Correct answers: 41

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math

Register with your Google Account and start collecting points.

Check your ranking on list.

Long winded

A man was giving a speech at his lodge meeting. He got a bit carried away and talked for two hours. Finally, he realized what he had done and said, "I'm sorry I talked so long. I left my watch at home."

A voice from the back of the room replied, "There's a calendar behind you..."

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...

Electric store lighting

In 1878, the first electric lighting in an American store was installed, using eight dynamos to run 28 Brush arc lamps* at John Wanamaker's extensive “Grand Depot” department store, Philadelphia, Pa. In 1875, he had bought the Pennsylvania Railroad depot for $500,000 and converted it into his innovative Grand Depot department store. The lamps had two sets of electrodes working alternately to lengthen the operating period. (patented by the maker, Charles F. Brush, on 2 Sep 1879, U.S. patent No. 219,208). The arc lamps gave a steadier light, but gas-lighting was retained as back-up. By 1888, Wanamaker had 355 arc lamps and 80 incandescent lamps*. He followed electric lights with ventilation fans. The electric displays drew customers.«

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.