Each week, we post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for two free Manhattan Prep GRE Strategy Guides.

To serve as team coach, 1 person is to be selected from among the people in Set A.
The 9 team players are to be selected from among the people in Set B, which has at least that many people.
There are 5 times as many different teams possible as there are different coaches possible.

Quantity A

The number of people in Set A.

Quantity B

The number of people in Set B.

See the answer choices and submit your pick over on our Challenge Problem page.