GMAT Practice Question Set #55 (Question 163-165)

Problem Solving Question #163: Passwords 4 or 5 characters  
Time 0 0 : 0 0 : 0 0

A computer system uses alphanumeric case sensitive characters for its passwords. When the
system was created it required users to create passwords having 4 characters in length. This
year, it added the option of creating passwords having 5 characters in length. Which of the
following gives the expression for the total number of passwords the new computer system can
accept?

Assume there are 62 unique alphanumeric case sensitive characters.

(A)

`63^4`

(B)

`62^5`

(C)

`62(62^4)`

(D)

`63(62^4)`

(E)

`63(62^6)`

GMATTM is a registered trademark of the Graduate Management Admission CouncilTM. The Graduate Management Admission CouncilTM does not endorse, nor is it affiliated in any way with the owner or any content of this web site.