The counting rule that is used for counting the number of experimental outcomes when n objects are selected from a set of N objects where order of selection is not important is called the
A) counting rule for permutations.
B) counting rule for combinations.
C) counting rule for independent events.
D) counting rule for multiple-step experiments.

Question

Quizplus · Accepted Answer

The counting rule used in this situation is the counting rule for combinations which gives the total number of ways to select n objects from a set of N objects when order is not important. This is different from the counting rule for permutations which gives the total number of ways to select n objects from a set of N objects when order is important. The other two options (C and D) are not relevant to this situation.

The Counting Rule That Is Used for Counting the Number