BRAIN TEASERS

enter your answer and press button OK

Find number abc

If c08a3 + 43c9a = b40cb find number abc. Multiple solutions may exist.

Correct answers: 24

The first user who solved this task is Nasrin 24 T.

#brainteasers #math

Register with your Google Account and start collecting points.

Check your ranking on list.

Ballpen in space

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.
To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface including glass and at temperatures ranging from below freezing to 300 C.
The Russians used a pencil.

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...

Samuel Morey

Born 23 Oct 1762; died 17 Apr 1843 at age 80.American inventor that one author called “the Edison of his day.” His inventions include raising water by wind (patented 11 Apr 1796), a rotary steam engine (14 Jul 1815), a fuel-saving fireplace (18 Jan 1813), a tide and current water wheel (13 Mar 1817), and shooting by steam (19 Jan 1819). Morey's earliest patent (26 Jan 1793), one of the first (No. X51) to be issued in the U.S., was for a rotating, steam-powered cooking spit for roasting meat, and was signed by George Washington. His next patent (25 Mar 1795) was for a steam engine to power boats, years before Robert Fulton. He developed a method for production of water gas fuel (a mixture of carbon monoxide and hydrogen from steam passed over heated carbon substances), patented as his “American Water Burner” (11 Dec 1817). On 1 Apr 1826, he was issued the first U.S. patent for an internal-combustion engine titled “Gas or Vapour Engine.”«[Image, drawn for a magazine (1909) is likely (?) from the artist's imagination. Webmaster has not yet found any other likeness on which it could have been based.]

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.