BRAIN TEASERS

enter your answer and press button OK

Calculate 5555+6666

If 5763+2345=5363 and 8926+6213=4126 then 5555+6666=?

Correct answers: 46

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

Russ Meneve: Unprovoked Shark Attacks

There were 79 unprovoked shark attacks last year. Unprovoked -- do we need that word in there? Are there people provoking shark attacks? Is there some dick from Jersey in the water: Hey shark, you freakin lookin at me? You got a problem or somethin? I got somethin for you to bite right here!

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...

Armand-Hippolyte-Louis Fizeau

Died 18 Sep 1896 at age 76 (born 23 Sep 1819). French physicist who was the first to measure the speed of light successfully without using astronomical calculations (1849). Fizeau sent a narrow beam of light between gear teeth on the edge of a rotating wheel. The beam then traveled to a mirror 8 km/5 mi away and returned to the wheel where, if the spin were fast enough, a tooth would block the light. Knowing this time from the rotational speed of the wheel, and the mirror's distance, Fizeau directly measured the speed of light. He also found that light travels faster in air than in water, which confirmed the wave theory of light, and that the motion of a star affects the position of the lines in its spectrum. With Jean Foucault, he proved the wave nature of the Sun's heat rays by showing their interference (1847).

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.