Question

How many ways are there to arrange five French club members for a yearbook photo if the president and vice president must be seated in front with the other three members behind them?

Answer 1

Since the president and the vice president must be seated in the front, that's two ways already; p-vp, vp-p.

Three other member, let's say their names are Bill, Joe, and Nate.
b-j-n, j-b-n, n-b-j, b-n-j, j-n-b, n-j-b.

6 different combinations.

Multiply 6 by 2,
6 x 2 = 12.

There are 12 different ways.