Mathway.com solves all kinds of math homework problems with step by step explanations.
15
The ‘@’ sign is centuries old, and was used in Europe to denote a unit of weight (the “arroba”) equivalent to 25 lbs.
11
The town of Villa Las Estrellas in Antarctica is the most remote town on Earth, and there's only three computers with internet access!
6
CAPTCHA stands for "Completely Automated Public Turing test to tell Computers and Humans Apart".
-7