In mathematics and digital electronics, a binary number is a number expressed in the binary numeral system, or base-2 numeral system, which represents numeric values using two different symbols: typically 0 (zero) and 1 (one). The base-2 system is a positional notation with a radix of 2.
This course will help you understand binary in a way you will never forget.
In Algebra you will often find the expressions (a=1, b=2, c=3). In Binary you will be able to do the same.