Solving Problems Involving Combinations (10.8.2)

Question 1

• A combination is a way of selecting distinct objects from a collection when order is not important. Combinations can cover several permutations.

Answer 1

• A combination is a way of selecting distinct objects from a collection when order is not important. Combinations can cover several permutations.

Question 2

• The combination formula: c(n, r) = n!/r!(n-r)!.

Answer 2

• The combination formula: c(n, r) = n!/r!(n-r)!.