How many values can be represented by a single byte ?

Question

How many values can be represented by a single byte ?

Answer 1

256.

A byte has 8 bits.  A single bit can have 2 values - 0 or 1.  Two bits can have four values -- 00, 01, 10, and 11.  In general, n bits can have 2^n possible values.  In a byte, n=8.

Answer 2

ah yes the powers of 2... 1,2,4,8,16,32,64,128,256,512 so on and so forth.