BRAIN TEASERS

enter your answer and press button OK

Find number abc

If 9767a - c405b = a36a9 find number abc. Multiple solutions may exist.

Correct answers: 19

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.

It was a baby mosquito's firs...

It was a baby mosquito's first day to fly out from home.
When the mosquito came back home later that day, the father mosquito asked, "How was your journey?"
The baby mosquito replied, "It went great, everyone was clapping for me!"

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...

Watermark patent

In 1819, a triple paper was patented in Britain by Sir William Congreve that could incorporate a colored watermark, visible when the paper was held up to the light, to make currency harder to counterfeit. His invention was to overlay a very thin couched sheet of white paper on each side of a layer of colored pulp containing a design, which would then be pressed together and dried. He made a proposal to the Commission of the Bank of England on 30 Oct 1818, but his process was not adopted due to resistance from the Portals firm which had manufactured the Bank of England's currency paper since 1725. Congreve is best known for his invention of military rockets, first used militarily, against the French, on 8 Oct 1806.«

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.