Question

In how many ways can you arrange eight books on a shelf? A. 20,160 B. 5,040 C. 36 D. 40,320

Answer 1

D is the answer  8*7*6*5*4*3*2*1 = 40320 

Answer 2

D. is because 8 = 8*7*6*5*4*3*2*1 = 40320