lisbethtsu5309
02.02.2020 •
Mathematics
Which of the following situations involve a permutation?
select all the correct answers.
a) determining how many different ways 7 runners can be assigned lanes on a track for a race
b) determining how many 5-letter passwords can be made using the word "graph."
c) determining how many different groups of 10 students can be chosen to go on a field trip from a group of 25 students
d) determining how many different ways to choose 3 employees from a group of 9 employees.
e) determining how many different seating charts can be made placing 6 people around a table
f) determining how many different ways 4 cashiers can be chosen to work from a group of 6 cashiers.
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Ответ:
A, B, E
Step-by-step explanation:
Permutations are involved when order matters, as in lane assignment, passwords, and seating charts.
When the end result is a "group of 10 students", "3 employees", or "4 cashiers", clearly order does not matter. One student, employee, or cashier is as good as another in these cases.
Ответ: