Combinatorics
Goal 33
Illustrates the permutation of objects.
Goal 34
Derives the formula for finding the number of permutations of n objects taken r at a time.
Goal 35
Solves problems involving permutations
Goal 36
Illustrates the combination of objects.
Goal 37
Differentiates permutation from combination of n objects taken r at a time.
Goal 38
Derives the formula for finding the number of combinations of n objects taken r at a time
Goal 39
Solves problems involving permutations and combinations