Unit 3: Permutations & Combinations Assignment Answer the questions below on a separate page. Show all work for full marks! 1. Find a single combination equal to the following: [3 marks] a) (19) b) (19) + (19) c) (m + 1) + (r+1) r 2. Solve for n where nP2 = 110. [3 marks] 3. How many 4-digit numbers can be made using the digits 0-6 if: a) Repetition is allowed [1 mark] b) Repetition is not allowed [1 mark] c) Repetition is allowed and the number must be greater than 3000 [1 marks] d) Repetition is not allowed and the number must be even [2 marks]