Question

Ana, Bill, and Charles are getting ready to pose for a photograph. In how many different ways could they line up for the picture?

Answer 1

720

Explanation:

you see, 3 x 2 x 1 = 6 possible ways of arranging the three people . Therefore in that set of 720 possibilities, each unique combination of three people is represented 6 times. So we just divide by 6.