In positional number systems, the number zero is important Question 11 options: 1) 2) 3) 4) How would someone who has memorized the value of 2 10 compute the value of 2 12 ? Question 12 options: 1) 2) 3) 4) The smallest hexadecimal digit is Question 13 options: 1) 2) 3) 4) 1) for multiplication. 2) as a placeholder. 3) for counting. 4) for addition. .