Permutation or Combination?

How many ways can you file 12 tabbed dividers, one after another, in a 3-ring binder?

In how many ways can you choose a 6 person dodge ball team out of 20 participants?

How many ways can 8 runners finish in 1st, 2nd, or 3rd place?

How many 8 digit codes can be made for a lock?

In how many ways can the letters of the word TREE be arranged?

In how many ways can 10 students out of 34 be chosen to attend a conference?

How many ways can you arrange 4 songs on a playlist?

How many ways can you choose a President, VP, and Secretary from an eight person committee?

In how many ways can you choose three out of nine toppings from a salad bar?

In how many ways can you list your four favorite cheesecakes, in order, off a menu of 15 options?