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Algo: 6-character combination

jackylembush Posted messages 11 Status Member -  
jackylembush Posted messages 11 Status Member -
Hello,

I am currently looking to find the total number of possible combinations, or at least their number, for a combination with 6 characters.

The characters are:
3 3 x 7 p 8

Having a little memory lapse on my math lessons :)
Thank you in advance.

3 answers

  1.
    jordane45 Posted messages 30427 Registration date   Status Moderator Last intervention   4 831
     
    Hello,
    You need to use factorials.
    The arrangement of p in n is expressed as: 

     nAp= n!/[p! × (n-p)!]


    NB: 0! = 1

    Here is an example in PHP:
    https://codes-sources.commentcamarche.net/source/100161-php-liste-des-combinaisons-possibles-somme

    --
    Best regards,
    Jordane
    1
    1. jackylembush Posted messages 11 Status Member
       
      Uh :D
      the truth is that I didn't understand much there XD
      I don't have an exceptional level in math
      0