Question

A photographer lines up 12 people for a photo in a single file line. How many different ways could that group be lined up for the picture?help me please on stuck

Answer 1

n(arrangement)= 12! = 12 x 11 x 10 x 9 x 8 x7 x 6 x 5 x 4 x 3 x 2= 479 001 600