BRAIN TEASERS

enter your answer and press button OK

Can you replace the question mark with a number?

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

Correct answers: 62

The first user who solved this task is Nílton Corrêa de Sousa.

#brainteasers #math #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

A married friend told me, he i...

A married friend told me, he is working on Aqua-thermal treatment of ceramics under constrained environment....
I was impressed...
On further probing, I learnt that he is washing dishes with hot water ...
Under his wife's supervision...!!

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...

Solar powered radio

In 1956, a radio made to run either on batteries or solar-cell power was first sold in the U.S. The Sun Power Pak was made by the Admiral Corporation, Chicago, Ill. By using six transistors instead of vacuum tubes, the radio needed so little electricity that with six ordinary flashlight batteries it could give 700 to 1,000 hours of use. The $60 radio was small (about 3 x 9 x 10 in.) and weighed only 5.25 pounds. The $185 auxillary Sun Power Pak provided electrical power from sunlight using a silicon "solar cell element." The Admiral Corp grew out of an earlier business, founded in 1924, selling battery chargers for radios. By 1934, it was making radios, then military electronics during WW II and afterwards became a pioneering TV brand.«

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.