ber of ways to select 2 letters from the set (A, B, C) if order is important a ber of ways to select 2 letters from the set {A, B, C) if no repeats are allow ber of combinations of 3 elements taken 2 at a time is nswer in part c differ from part a or b? Choose the correct answer below. ne as part a and b ers only from part a ers from both part a and part b ers only from part b