Quiz 2. Could you please explain about a reserve option
I cannot understand the second question in the quiz. There 7 options for 4 elements, but this time with a reserve player. Could you please explain why the answer is 7!/2!?
Thank you for your question!
Following the same logic as the one in Question 1 from the same quiz, we need to choose 5 people (4 people for the team and one reserve player) out 7. Using variations without repetition, we obtain:
V = 7! / (7-5)! = 7! / 2!
Hope this helps!