.
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.
-----------------------
On Combinations and Permutations, see the lessons
- Introduction to Permutations
- PROOF of the formula on the number of Permutations
- Problems on Permutations
- Introduction to Combinations
- PROOF of the formula on the number of Combinations
- Problems on Combinations
- OVERVIEW of lessons on Permutations and Combinations
in this site. // I listed here the "introductory" lessons only . . .
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Combinatorics: Combinations and permutations".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.