If there are 20 students in a 5th grade class. Four of these students will be selected to be patrols. In how many ways can the four patrols be selected?

There are 4845 ways to select four patrols

Step-by-step explanation:

Total number of students in 5 th grade = 20

No. of students selected for patrols = 4

We are supposed to find In how many ways can the four patrols be selected

We will use combination

Formula :

Substitute n = 20 and r = 4

So,the four patrols can be selected in no. of ways =

Hence There are 4845 ways to select four patrols

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