Our pop quiz on hexadecimal basics was a hit with TechRepublic members. As of grading time, nearly 2,000 people had tested their knowledge of hexadecimal math. If you haven’t had a chance to take the quiz, I encourage you to try your luck, before reading the answers below. Now, on to the answers!

## Base-16 numbering system

The correct answer is: Base-16 and 84 percent of those who answered the question got it right. The hexadecimal numeral system uses sixteen distinct symbols. Usually, the symbols 0-9 are used to represent zero to nine, and A, B, C, D, E, and F are used to represent values ten to fifteen.

## Commonly uses 0-9 and A, B, C, D, E, and F

The correct answer is: False and 56 percent of those who answered the question got it right. Of this quiz’s five questions, this one was probably the trickiest. As the answer to Question 1 indicates, hexadecimal systems most often use the symbols 0-9 to represent zero to nine and A, B, C, D, E, and F to represent ten through fifteen. However, it’s true that using symbols 1-10 and A, B, C, D, E, and F do give you 16 values–if you count 10 as a single value and not a 1 and a 0. I’ll admit there might be a little room for interpretation of the question’s wording. If you answered True and can make a good case for the answer, I might reconsider and mark your answer correct.