Question

You have 5 reindeer and you want to have 3 fly your sleigh. You always have your reindeer fly in a single-file line how many different ways can you arrange your reindeer

Answer 1

60 different ways

Explanation:

According to the given data, we have

Number of reindeer i.e 5

Number of them fly their sleigh i.e 3

In order to find different ways can you arrange your reindeer, we will use "Permutation":

considering, n = 5 and r=3

it becomes,

5P3= 60 (by using calculator)

OR

`nPr = (n!)/((n-r)!)`

5P3 = 5!/ (5-3)!

5P3=120 / 2

5P3= 60

Thus, ways can you arrange your reindeer in 60 different ways