Considering when we use each permutation or combination, we have that:
- Situations 1, 2, 3, 7, 8, 10 involve combinations.
- Situations 4, 5, 6 and 9 involve permutations.
When we use combinations and permutations?
- When the order is not important, combinations are used.
- When the order is important, for example, there are roles, or all elements of a data-set(books in a shelf for example) are arranged, we use permutations.
Hence, we have that:
- Situations 1, 2, 3, 7, 8, 10 involve combinations.
- Situations 4, 5, 6 and 9 involve permutations.
More can be learned about combinations and permutations at https://brainly.com/question/25925367
