Three out of seven students in the cafeteria line are chosen to answer survey questions. how many different combinations of three students are possible?

35 possible combinations would be there.

Step-by-step explanation:

We have total of seven students we have to choose three out of those seven

n is the total possibilities n =7 in the given case

And r is the chosen ones

Hence, r=3 in the given case.

Substituting the values of n and r in the formula we get

Using n!=n(n-1)----1

Cancel the  common factor we get

 possible combinations would be there.

multiple all that

step-by-step explanation:

27×17