BRAIN TEASERS

enter your answer and press button OK

Perform this calculation in ...

Perform this calculation in your head, mentally adding the numbers as quickly as you can. Start with 1000 and add 40. Now add 1000. Add 30 to that, then add another 1000. Now add 20 to that result. Add another 1000 and finally, add 10 to that. What is the total?

Correct answers: 86

The first user who solved this task is Sanja Šabović.

#brainteasers #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

Dropping me down to a B

I was furious at my English teacher for dropping me down to a B for missing just a single period.

However, I'm sure he'll be worried enough to increase it to an A after I inform him that I've actually missed three periods.

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...

Richard E(dwin) Shope

Born 25 Dec 1901; died 2 Oct 1966 at age 64.American animal pathologist and virologist who was first to isolate an influenza virus, first to vaccinate animals against influenza, and first to identify (1928) the causative agent as a virus in the 1918-19 Spanish influenza pandemic. The laboratory and field studies he made of viruses in animals provided knowledge in protecting both animals and humans against viruses. He researched cancerous tumors in animals. In studying the role of mosquitoes as carriers of sleeping sickness disease, he caught the potentially fatal disease himself from them. Fortunately, he recovered completely (one of the few who did so without permanent brain damage). His co-worker, Dr. Delphine Clark, recovered "live virus" from his blood, the first to be taken from a live human.«

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.