A Computer Security System Requires a Unique Password for Each

Multiple Choice

A computer security system requires a unique password for each user.The passwords use only letters of the English alphabet (26 possible letters) and cannot contain any repeats; that is, any given letter can be used only once in a password.If passwords have five letters each, how many passwords are available from which to choose?

A) 65,780
B) 11,881,376
C) 7,893,600
D) 130