In a number, what is the most significant digit?
In a number, what is the least significant digit?
The rightmost digit
How many bits in a nibble?
4 (a nibble is 1/2 a byte)
How many bits in a byte?
8 (2 nibbles)
Why do we use hexadecimal?
It is a more visually concise way of representing binary numbers (every possible 4 bit nibble has a one character representation in hex)