There are 30 ways.
60
Once...its true!
360
mad adam dam am
There are 3360 ways.
You can arrange and rearrange the word as many times as you like!There are 5040 different ways.
Fix X then you are left with 10 letters, so you have 10! ways to arrange
There are 30 ways.
24 ways
362,880 ways
24
60
10080
15
One... numbers
12