Tell what you would compute in npr or nCr form, whichever is appropriate to the situation (i.e., does order matter or not?), but do not compute it. For example, if I wanted the number of ways 5 letters could be selected from a set of 7 without repetition and where order does not matter, enter 7C5. The number of ways that 3 students out of a class of 35 can be selected to form a study group. Answer: Tell what you would compute in nPr or nCr form, whichever is appropriate to the situation (i.e., does order matter or not?), but do not compute it. For example, for the number of ways 5 letters could be selected from a set of 7 without repetition and where order does not matter, enter 7C5. The number of ways that two floats in a parade of 40 floats can be selected for the honor of beginning or ending the parade. Answer: