Question

You have to answer 2 essay questions for an exam. There are 7 essays to choose from. How many different groups of 2 essays could you possibly choose?

Answer 1

Answer:

21

Step-by-step explanation:

As there are 7 essays to choose from and we need to choose 2 essays.

So , groups of 2 essays to choose from = $7_{C_{2} }$

                                                                   = $\frac{(7)(6)}{2}$

                                                                  = 21