Permutation Flashcards
1
Q
Formula
A
nPk = n! / (n-k)! n= the # in the larger group k= the # you are arranging
2
Q
Combination Formula
A
nCk = n! k! (n-k)! k= the number you are choosing n= the # in the larger group
3
Q
What is permutation ?
A
Rearranging objects.
Example : a set of objects . There are 6 permutations of the set {1,2,3}
Factorial n!
