| View previous topic :: View next topic |
| Author |
Message |
auntsom
Just gettin' started!
Joined: 09 Jul 2008
Posts: 18
Thanks given: 0
Thanked 0 times in 0 posts
Location: Thailand
|
 Posted: Mon Jul 21, 2008 8:29 am Post subject: GMAT prep - maximum numbers of different stocks |
 |
|
All of stocks on over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 26 letters of the alphabet. Which of the following gives the maximum number of different stocks that can be designated with these codes?
1. 2(26^5)
2. 26(26^4)
3. 27(26^4)
4. 26(26^5)
5. 27(26^5) |
|
| Back to top |
|
 |
|
|
evansbd
Rising GMAT Star
Joined: 01 Jul 2008
Posts: 52
Thanks given: 1
Thanked 0 times in 0 posts
Target GMAT Score: 700
|
|
| Back to top |
|
|
sudhir3127
Moderator
Joined: 07 Jul 2008
Posts: 785
Thanks given: 0
Thanked 59 times in 55 posts
Location: INDIA
Target GMAT Score: 700+
|
| Posted: Mon Jul 21, 2008 8:37 am Post subject: |
|
|
My answer is C
here it goes..
for 4 letter code its 26^4
5 letter code its 26^5
the maximum ways is 26^4+26^5
26^4+ 26^4*26
26^4(26+1)
hence 27(26^4) |
|
| Back to top |
|
|
|
