It is currently 24 Jun 2017, 05:19

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Find S. (1) S^4=S! (2) S^4!=1

Author Message
Director
Joined: 26 Feb 2006
Posts: 899
Find S. (1) S^4=S! (2) S^4!=1 [#permalink]

### Show Tags

14 May 2007, 21:01
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Find S.

(1) S^4=S!
(2) S^4!=1
Senior Manager
Joined: 03 May 2007
Posts: 270

### Show Tags

14 May 2007, 21:32
(1) is sufficient S^4=S! there is only one solution S=1
(2) is insufficient S^4!=1 is the same as S^24=1 and S can be either 1 or -1

SVP
Joined: 01 May 2006
Posts: 1796

### Show Tags

14 May 2007, 23:20
(A)... I agree with Sergey_is_cool

Just in stat2, S=0 is also possible as 0! = 1
14 May 2007, 23:20
Display posts from previous: Sort by