Suppose we want to choose 3 letters, without replacement, from the 4 letters A, B, C, and D. (If necessary, consult a list of

Question

Suppose we want to choose 3 letters, without replacement, from the 4 letters A, B, C, and D.
(If necessary, consult a list of formulas.)
(a) How many ways can this be done, if the order of the choices matters?
(b) How many ways can this be done, if the order of the choices does not matter?

Kunduz · Accepted Answer

Click to see the answer