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hexadecimal = base 16
digits go
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
...
That's why instead of having a really long color code 255 red 0 blue 0 green would be #FF0000 (if you know html, colors are all in quotes or in that 6 digit category).
so
Binary (base 2) = Hex (base 16)
10000 = 10
01111 = F or 15
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