The base two is binary. That's where bi- comes from.
The binary number 11111111 represents the number 255 in base 10.
Base 2
The number 21 in binary is 10101
The binary number 101010 equals 42
The number 21 in binary is 10101
Binary 1001111 is 79 in decimal.
2
10
Binary describes a number with a base of two.
The binary system is the name given to the base-2 number system.
26 base 10 = 1 1010 base 2