How many switch combinations are in a truth table with five inputs?

9 binary input lines ==> 512 different input 'words'

12

five

Let's try and figure this one out... First case (the easy one) - We want to use any of the 10 digits to create a 5-digit number. In this case, we have 5 slots and in each slot we can put any of 10...

Count up from 0 to 255 in binary and all the outputs are 0 until all the inputs are 1.