Solve by simplifying the problem. there are 18 students in mr. alvarez’s art class. throughout the year, every student must pair up with every other student to complete a project. how many projects will be finished?

153

Step-by-step explanation:

There are 18 students in a class.

They are required to pair up with every other student to complete a project throughout the year .

Now we are asked to find the no. of projects will be finished .

So, we will use combination

Formula :

No. of students (n)=18

No. of students in each pair (r)= 2

Substituting the values in formula :

Thus the no. of projects will be finished is 153

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step-by-step explanation:

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