A popular website requires users to create a password consisting of the digits {1,2,3,4,5}. If no digit may be repeated and each password must be at least 4 digits long, how many passwords are possible?  Choose the correct choice from the following choices:
A) 4! + 5!	B) 2 x 5!	C) 4! x 5!	D) 9!	E) 10!
If we choose the 5 different digits then they can be arranged in 5! ways.   The number of possible 4-digit passwords is 5*4*3*2 = 5!   The total number of passwords is 5! + 5! = 2*5!   The answer is 2 x 5!.
<result>B</result>
A popular website requires users to create a password consisting of the digits {1,2,3,4,5}. If no digit may be repeated and each password must be at least 4 digits long, how many passwords are possible?