Question

1) How many 10-bit strings begin with 1011 or 01?
2) How many 10-bit strings begin with 1011 or end with 01?
3) How many 10-bit strings begin with 1011 and end with 01?

Answer 1

Autumn0909 what subject would you categorize this question in?

Answer 2

I'm in Discrete Mathematics.

Answer 3

So #1) we have case 1: 1011 ___ ___ and case 2: ____ ___ _01
each blank can only have a 0 or a 1
case 1: 2^6 case 2: 2^8
because it says or we add them together and get 320?