Hexadecimal numbers use base 16 instead of our normal decimal numbers that use base 10. The "units" go from 0 to 15 instead of 0 to 10. The numbers beyond 9 are represented by the letters A to F. That is 10 is represented by A, 11 by B, 12 by C, 13 by D, 14 by E and 15 by F.
The next highest "places" after the "units" represent multiples of 16. So, for example the hexadecimal number
2AF4 is 2*16^3 + 10*16^2 + 15*16 + 4 = 10996 (in decimal).
.
Hexadecimal numbers use base 16 instead of our normal decimal numbers that use base 10. The "units" go from 0 to 15 instead of 0 to 10. The numbers beyond 9 are represented by the letters A to F. That is 10 is represented by A, 11 by B, 12 by C, 13 by D, 14 by E and 15 by F.
The next highest "places" after the "units" represent multiples of 16. So, for example the hexadecimal number
2AF4 is 2*16^3 + 10*16^2 + 15*16 + 4 = 10996 (in decimal).
.