Tell whether order is important or not in the following activity:
9. choosing 5 questions out of 10 question s in a test.
10. opening a combination lock.
11. winning in a contest.
12. selecting 7 people to form a student affair committee.
13. forming triangles from 6 distinct point in which no 3 point s are collinear.
14. assigning seats to guests at dinner.
15. drawing a set of 6 numbers in a lottery containing numbers 1 to 45.
16. entering the Pin (personal identification number) of your ATM card.
17. selecting 3 posters to hang out of 6 different posters.
18. listing the subsets of a given set.​