BRAIN TEASERS

enter your answer and press button OK

Calculate the number 989

NUMBERMANIA: Calculate the number 989 using numbers [5, 2, 5, 7, 40, 882] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 12

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.

I Am Napoleon

Late one night at the insane asylum, one inmate shouted, "I am Napoleon!"
Another patient asked, "How do you know?"
The first inmate said, "Because God told me!"
Just then, a voice from another room shouted, "I did NOT!"

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...

Ira S. Bowen

Died 6 Feb 1973 at age 74 (born 21 Dec 1898).Ira Sprague Bowen was an American astrophysicist whose investigation of the ultraviolet spectra of highly ionized atoms led to his explanation of the unidentified strong green spectral lines of gaseous nebulae (clouds of rarefied gas) as forbidden lines of ionized oxygen and nitrogen. This emission, appearing to match no known element, had formerly been suggested to be due to a hypothetical element, “nebulium.” Bowen was able to show, that in reality, the emission lines exactly matched those calculated to be the “forbidden lines” of ionized oxygen and nitrogen under extremely low pressure. This made a major advance in the knowledge of celestial composition. He was director of the Mt. Wilson and Palomar Observatories from 1948-64.«

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.