E. Hexadecimals
“Regular” numbers are based on the base 10 system, that is, there are ten symbols (what we call “numbers”): 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. To represent numbers greater than 9, we use a combination of these symbols where the first digit specifies how many ones, the second digit (to the left) specifies how many tens, and so on.
In the hexadecimal system, which is base 16, there are sixteen symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, and f. To represent numbers greater than f (which in base 10 we understand as 15), we again use a combination of symbols. This time the first digit specifies how many ones, but the second digit (again, to the left) specifies how many sixteens. Thus, 10 in the hexadecimal system means one ...
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