There are 126 ways a student can select 5 questions from an exam containing 9 questions
How to determine the number of selections?
The given parameters are
Total questions, n = 9
Selected question, r = 5
The number of ways is calculated as
Ways = nCr
This gives
Ways = 9C5
Apply the combination formula
Ways = 9!/5!4!
Evaluate
Ways = 126
Hence, there are 126 ways a student can select 5 questions from an exam containing 9 questions
Read more about combination at:
https://brainly.com/question/4658834
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