PROJECT EULER · #0162
Hexadecimal Numbers
In the hexadecimal number system numbers are represented using
The hexadecimal number
In the
Like numbers written in base ten we write hexadecimal numbers without leading zeroes.
How many hexadecimal numbers containing at most sixteen hexadecimal digits exist with all of the digits
Give your answer as a hexadecimal number.
(A, B, C, D, E and F in upper case, without any leading or trailing code that marks the number as hexadecimal and without leading zeroes, e.g. 1A3F and not: 1a3f and not 0x1a3f and not $1A3F and not #1A3F and not 0000001A3F)
Write-up coming later
The complete problem is available here. An approach, code, and answer will be added later.