stats_11_10_23.py

Created on October 10, 2023

553 Bytes

*** Dénombrement ***

foctoriel : n!

permutations de lettres:

Ex : TOC = 3! = 6 possibilités

LILLE = 5! / 3! = 20 poss

TOUTOLOGUE = 10! / 2!2!3! =151200

*** Arrangements ***

Sans répétitions ! 

  4
A 9 =  9! / (9-4)! = 9! / 5!

  0
A 5 = 5! / 5! = 1

  1
A 5 = 5! / 4! = 5

*** Combinaisons ***

on le note (n) => k parmi n
           (k)
           
on le calcule :
   p 
 A n
-----
  p!
         3
(5)    A 5
(3) = ----- = 3 poss ds 5
        3!
        
  = 5x4x3 / 3x2 = 10
  
(7)
(3) = 7x6x5 / 3x2 = 35

(3)
(0) = 1

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