Question

How many different ways can the students at a school select the president, vice president, and secretary from a group of 5 people?

Answer 1

The order of each selection is important. Therefore the number of permutations is needed.
\[5P3=\frac{5!}{(5-3)!}=you\ can\ calculate\]

Answer 2

15

Answer 3

Not really.
\[5P3=\frac{5!}{(5-3)!}=\frac{5\times4\times3\times2\times1}{2\times1}=you\ can\ calculate\]

Answer 4

60

Answer 5

Correct!

Answer 6

oh ok

Answer 7

You're welcome :)

Answer 8

thank you thank you

Answer 9

yw