BRAIN TEASERS

enter your answer and press button OK

Calculate the number 775

NUMBERMANIA: Calculate the number 775 using numbers [8, 2, 1, 1, 82, 355] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 11

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.

Look forward to trip to Europe

Why did the cannibal look forward to his trip to Europe?
Because he had a Swede tooth.

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...

Portrait camera

In 1841, Austrian inventor Friedrich Voigtländer began selling the world's first purpose-built portrait camera. Since a person wanting a portrait would have to hold a pose for the time required for a successful exposure, it was critically important to be able to do that in the shortest time—which depends on the lens. Voigtländer incorporated a rapid double-combination lens designed according to the calculations of Viennese mathematician Josef Max Petzval. What used to take 20-30 minutes could now be done in two. The brass-bodied camera was shaped somewhat like a Lava Lamp bottle on its side. It made circular daguerreotypes about 3½-in (9cm) diam. The Voigtländer family business was started by his father in Vienna in 1756, making scientific instruments.«

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.