Question 1136109: how many ways can a row of three contestants for a TV game show be selected from an audience of 342 people Answer by ikleyn(52817) (Show Source):
If the problem means "a row" as the ordered set, then the answer is 342*341*340, and you can use your calculator
to get the numerical value.
But if the order does not matter, then the team of 3 contestants can be selected by = ways from the audience.
In the first case we have deal with PERMUTATIONS.
In the second case, we consider COMBINATIONS.