how many different binary numbers can be formed?

G

Guest

Guest
Hi,
Im having trouble setting up this question and getting the right answer for it.

In the binary number system which is used in computer operations, there are only two digits allowed: 0 and 1

If eight binary digits are used (for example, 11001 101), how many different binary numbers can be formed?


I thought it was like 8C2 but its way to small a number to be that. Help please?
Thanks.
 
You have two choices of each of eight places.
For bitstring of length 2 there are (2)(2)=4 possible.
How are possible for an 8-bit string?
 
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