BRAIN TEASERS

enter your answer and press button OK

A book costs $1 plus half it...

A book costs $1 plus half its price. How much does it cost?

Correct answers: 69

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.

Demetri Martin: Cool Leather

I was at a party the other night, and I saw a guy wearing a leather jacket, and I thought, That is cool. Like 10 minutes later, I saw a guy wearing a leather vest and I thought, That is not cool. Thats when I realized cool is all about leather sleeves.

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...

Julian Lowell Coolidge

Born 28 Sep 1873; died 5 Mar 1954 at age 80. American mathematician and educator noted for numerous published works in theoretical mathematics. He earned a B.A. degree at Harvard (1895), then a B.Sc. (1897) from Oxford, England, the first natural science degree ever awarded at Oxford. He began teaching at Groton School, Conn. (1897-99) where one of his pupils was Franklin D Roosevelt, the future U.S. president. Coolidge was an instructor at Harvard University, taking leave to study abroad (1902-04) with Corrado Segre at Turin and Eduard Studyat the University of Bonn ( Ph.D. 1904). When he returned to Harvard, he remained there for the rest of his career. Later in life, he took an interest in his subject's history, writing Mathematics of the Great Amateurs (1949).«

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.