AHL 1.10—Perms and combs, binomial with negative and fractional indices

Question Type 1: Using permutations formula

Question Type 2: Accounting for the same term ordering

Question Type 3: Grouping items together

Question Type 4: Using combinations formula

Question Type 5: Applying formula multiple times for different groups of selection

Question Type 6: Applying formula to disjoint cases

Question Type 7: Writing scenarios as both permutation and combination

Question Type 8: Applying permutations and combinations separately

Question Type 9: Using binomial theorem for fractional indices

Question Type 10: Using binomial theorem for negative indices

Question Type 11: Finding coefficient of term using general binomial expansion formula