Answer
a) 256
b) 128
Work Step by Step
The total number of outcomes is the product of possiblities of each independent variable.
a) There are 8. independent bits and each bit can have 2 possibilities. Hence total number of different possible bytes is ,$2^8=256$.
a) There are only 7 independent bits and each bit can have 2 possibilities. Hence total number of different possible bytes is ,$2^7=128$
