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# Mathematics-Base ( Numbers )

In binary system we have only 2 digits, 1 and 0. So here base is 2.

In decimal system, we can express the numbers using 0 to 9 digits. So base of decimal system is 10.

Like wise base of a octal number is 8. Octal numbers are expressed using 0 to 7

Base of a hexadecimal number is 16. Hexa decimal number is expressed using 0 to 9 and A, B, C, D, E, F. Here A = 10, B = 11, C = 12, D = 13, E = 14, F = 15