The answers to the question are:
<h3>How to solve for permutations and combinations</h3>
1. The letters of the word track can be arranged in 5! ways
These are 5 x 4 x 3 x 2 x1
= 120
2. The way that the student would be able to select 6 out of 10 questions would be by 10C6
= 210 ways
C)This teacher would be able to make the decision of the prices to the students using =20C6= n!(n-r!r!)
= 38760
Read more on permutations and combinations here:
brainly.com/question/4658834
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