Find number abc
[5940] Find number abc - If b61b4 - b10c6 = c13a find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 26 - The first user who solved this task is Nasrin 24 T
BRAIN TEASERS
enter your answer and press button OK

Find number abc

If b61b4 - b10c6 = c13a find number abc. Multiple solutions may exist.
Correct answers: 26
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.

Grandma Said That?

Grandma Said That?
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...

Adding machine

In 1887, a patent for the adding machine was granted to Dorr Eugene Felt of Chicago, Illinois. His Comptometer was the first practical key-driven calculator with sufficient speed, reliablility and economic benefit. He called his original prototype the "Macaroni box", a rough model that Felt created over the year-end holidays in 1884-85. The casing was a grocery macaroni box, assembled with a jackknife using meat skewers as keys, staples as key guides and elastic bands for springs. Door improved his design, producing his earliest commercial wooden-box Comptometer from 1887 thru 1903, leading to the first steel case Model A (1904 that would be standard for the remainder for all "shoebox" models. Electric motor drive was introduced in the 1920's.
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.