BRAIN TEASERS

enter your answer and press button OK

Calculate the number 931

NUMBERMANIA: Calculate the number 931 using numbers [5, 4, 2, 4, 42, 777] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 11

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

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

April Fools’ Day Pranks - Tell your kid you bought them an iPad

I’m sorry, sweetie, did I say iPad? I meant I bought you an eye pad.

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...

François Hennébique

Born 25 Apr 1842; died 20 Mar 1921 at age 78.French engineer who was an important leader in experimenting with various ways of reinforcing concrete with iron and steel. At the Paris Exposition of 1867, Hennebique saw Joseph Monier's tubs and tanks built of concrete reinforced with wire mesh, and began experimenting with ways to apply this new material to building construction, setting up his own firm (1867). First using reinforced-concrete floor slabs (1879), he progressed to a complete building system, patented 1892, using his invention of a method using hooked connections on reinforcing bars. Hennébique introduced his techniques into Britain when he was commissioned to build a new flour mill in Swansea (completed 1898). This was the first multistorey reinforced concrete building in Britain.

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.