BRAIN TEASERS

enter your answer and press button OK

MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?

Correct answers: 297

The first user who solved this task is Pratima Singh.

#brainteasers #math #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

iPhone 11 Max cameras

Why do the iPhone 11 Max cameras look like a stove?

Because Tim cooks!

Author Peter Pirc

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...

Radioelectric battery

In 1951, the first battery to convert radioactive energy to electrical was announced. Invented by Philip Edwin Ohmart of Cincinnati, Ohio, it consisted of two electrochemically dissimilar electrodes separated by a filling gas that was ionized by exposure to the nuclear energy to produce electrical current. Ohmart obtained an emf efficiency of .01% on a cell using magnesium dioxide and lead-dioxide with argon as the gas and Ag110 as the radioactive source.

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.