BRAIN TEASERS

enter your answer and press button OK

Calculate the number 613

NUMBERMANIA: Calculate the number 613 using numbers [2, 8, 9, 4, 39, 538] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 17

The first user who solved this task is Nílton Corrêa de Sousa.

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

The Conscientious Ransomer

I got attacked by ransomware and was asked for money...
I sent them my pay stub...
Not only did they immediately remove the malware from my system, but they also put some money into my account.

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...

Thomas Milton Rivers

Born 3 Sep 1888; died 12 May 1962 at age 73.American virologist who, as chairman of the virus research committee of the National Foundation for Infantile Paralysis (now the March of Dimes Birth Defects Foundation; 1938-55), organized the long-range research program that led to development of the Salk and Sabin anti-poliomyelitis vaccines. His interest in medical research was awakened while with the Army medical corps (1918). He worked from 1922-55 at the Rockefeller Institute as a bacteriologist, and as its Director (after 1937). Rivers addressed a range of topics relating to some of the most devastating viral diseases, including smallpox, Rift Valley Fever, and epidemic encephalitis. He also discovered the parainfluenzae bacillus and cultivated vaccine virus for human use.

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.