BRAIN TEASERS

enter your answer and press button OK

Calculate the number 2140

NUMBERMANIA: Calculate the number 2140 using numbers [5, 7, 9, 1, 25, 177] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 41

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

Three Men

When I asked my boss for a salary rise because I was doing the work of three men.
He said he couldn't increase my pay, but if I told him the names of the three men he'd fire them.

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...

Blaise Pascal

Died 19 Aug 1662 at age 39 (born 19 Jun 1623). French mathematician and physicist who was a child prodigy. He laid the foundation for the modern theory of probabilities. In hydrodynamics he formulated what came to be known as Pascal's law of pressure, and invented the syringe and hydraulic press. Pascal invented the first digital calculator to help his father with his work collecting taxes. He worked on it for three years (1642-45). The device, called the Pascaline, resembled a mechanical calculator of the 1940s. This, almost certainly, makes Pascal the second person to invent a mechanical calculator for Schickard had manufactured one in 1624. He died at the young age of 39 having been sickly and physically weak through life. Autopsy showed he had been born with a deformed skull.

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.