Factorials

Exercise

Consider the expansion of \(\left(a+b\right)^3\):

The notation \(^nC\_r\), or "\(n\) choose \(r\)",

Binomial Coefficient nCr

Pascal's Triangle

Connection between nCr and Pascal's Triangle

The expansion of (a+b)ⁿ

Exercise

Finding the coefficient of a specific term

Exercise

Problem

Problem

Problem

Problem

Problem

Ordering items

Permutations

Exercise

Combinations

Exercise

Counting principles

Exercise

Orderings where certain items need to stay together

Orderings where certain items need to stay apart

Complementary events