BRAIN TEASERS
Brain Teasers User Profile

Leticia Okata

rank
600
points
1
See full ranking list
short ranking list
598. Japa do CS 1
599. Andre Gggg 1
600. Leticia Okata 1
601. Manoel Batista 1
602. Arminda Brudey 1
last 3 solved tasks
If 1+4=5, 2+5=12 and 3+6=21 then 5+8=?

Adding machine

In 1872, the first U.S. patent for an adding machine capable of printing totals and subtotals, called a "calculating machine," was issued to E.D. Barbour of Boston, Mass. However, it was not practical. (No. 133,188)

Breakthrough?

Millions of years ago, there was no such thing as the wheel. The only way to move things was by carrying or dragging. One day, some primitive guys were watching their wives drag a dead mastodon to the food preparation area. It was exhausting work. The guys were getting tired just WATCHING.
Then they noticed some large, smooth, rounded boulders and they had an idea. They could sit on the boulders and watch! This was the first in a series of breakthroughs that ultimately led to television.
Jokes of the day - Daily updated jokes. New jokes every day.
Follow Brain Teasers on social networks
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.