BRAIN TEASERS

enter your answer and press button OK

Find number abc

If 612a6 - 11666 = abc80 find number abc. Multiple solutions may exist.

Correct answers: 26

The first user who solved this task is Nasrin 24 T.

#brainteasers #math

Register with your Google Account and start collecting points.

Check your ranking on list.

Andy Kindler: Celebrating Suffering

Jewish people, we dont believe in Hell or a future place to suffer. Were suffering right now. Every one of our holidays celebrates how much weve suffered. Passover -- were celebrating 5,000 years ago, God passed over our houses and murdered all the Egyptians. Were celebrating, Hey, thank God we didnt get slaughtered.

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...

Black American invention

In 1888, a U.S. patent was issued for the railway signal to the Black American inventor, A.B. Blackburn (No. 376,362). The type of signal was that designed to be operated by the wheels of a train. A lever was depressed as a train wheel travelled over it, to remotely operate an alert through a mechanical linkage upon the passing of the train. It was designed for use upon a single track railway line for trains passing in one direction. To provide a signal for trains passing in the opposite direction, a similar apparatus would be applied on the opposite rail. This patent was an improvement in mechanical design of his earlier patent No. 309,517 on 23 Dec 1884, in which he also described how a gong was activated to provide the alert.«[Image: detail from patent diagram showinf device beside a section of rail.]

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.