1/4
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
Permutations
Arrangement of items where order matters
Combination
Selection of items where order doesn't matter.
Factorial (!)
The product of all positive integers less than or equal to a number
In general there are more k permutations than k combinations
We use addition principle to combine the number of outcomes for each cases