BRAIN TEASERS

enter your answer and press button OK

What is the father doing now?

The mother is 21 years older than the son, and in 6 years time she will be 5 times as old as the son. What is the father doing now?

Correct answers: 18

The first user who solved this task is Sanja Šabović.

#brainteasers #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

Can’t stick with a diet?

Q: What do you call someone who can’t stick with a diet?

A: A desserter.

By reddit user JquaterReddit

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...

Vulcanized rubber

In 1844, Charles Goodyear received another patent (U.S. No. 3,633) for "An Improvement in India-Rubber Fabrics." This way of processing india-rubber added white lead to the sulphur and heating method he patented 24 Feb 1839. He had spent several years, since going bankrupt in hardware, trying to improve natural rubber, which became sticky in summer heat and brittle in the winter. He had experimented to coat it with a powder to make it less sticky when he accidentally dropped a mixture of natural rubber and powdered sulphur on a hot stove in Woburn, Massachusetts. The heat completed the process. Despite the value of his inventions, he died in poverty in 1860. (His earliest patent, 17 Jun 1837 used metallic solutions.)

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.