How many different ways can the first 10 letters of the alphabet be arranged?

4,628,800

3,628,800

2,628,800

1,628,800

3628800

Step-by-step explanation:

First letter can be chosen form all 10, next from 9, third from 8 and so on, until you have only one number left.

So the number of ways to arrange the letters can be calculated as

n=10*9*8*7*6*5*4*3*2*1=362800