Question

How many different values can be represented by a 32 bit integer?

Reminders: A 32 bit integer is a sequence of 32 bits. A bit (binary digit) can have 2 values (0 or 1).

Answer 1

there are 2 choices for each bit. so you can use multiplication principle

Answer 2

2 choices for first bit & 2 choices for second bit & 2 choices for third bit...
= 2 x 2 x 2 ...

now count how many 2's you have

Answer 3

3

Answer 4

there are 32 bits , each bit has 2 choices.
think of them as 32 slots