FTCE General Knowledge Math Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

In combinatorial contexts, the symbol 'n' is conventionally used to represent the total number of elements in a set from which a combination or permutation is to be selected. This means that when one is considering combinations (like choosing k items from a total of n items), 'n' indicates the complete set of available items.

For instance, if you have a set of 10 distinct objects and you are asked to find out how many ways you can choose 3 of those objects, 'n' would be 10, as it reflects the total number of items in the set.

The other options describe various aspects of combinatorial problems but do not accurately capture the meaning of 'n.' The number of choices available or the number of items selected refers to specific situations within the broader context, while the total number of outcomes typically pertains to probability and may involve calculations based on 'n', but does not define it. Thus, in terms of set theory and combinations, 'n' fundamentally denotes the total number of elements.