It is currently 23 Nov 2017, 03:01

### 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

# Z^n =1 , what is the value of z 1. n is a nonzero integer 2.

Author Message
Manager
Joined: 17 Jan 2006
Posts: 92

Kudos [?]: 19 [0], given: 0

Z^n =1 , what is the value of z 1. n is a nonzero integer 2. [#permalink]

### Show Tags

07 May 2006, 17:58
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

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

Z^n =1 , what is the value of z
1. n is a nonzero integer
2. z>0

Kudos [?]: 19 [0], given: 0

Manager
Joined: 17 Jan 2006
Posts: 92

Kudos [?]: 19 [0], given: 0

### Show Tags

07 May 2006, 19:09
i don't get it , could you please explain further.

Kudos [?]: 19 [0], given: 0

GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5032

Kudos [?]: 453 [0], given: 0

Location: Singapore

### Show Tags

07 May 2006, 21:44
St1:
Insufficient. Could be -1^2 or 1^(anything).

St2:
Insufficient. Could be z^0.

Using St1 and St2:
We know z = 1. Sufficient.

Ans C

Kudos [?]: 453 [0], given: 0

Intern
Joined: 17 Feb 2006
Posts: 37

Kudos [?]: [0], given: 0

### Show Tags

07 May 2006, 23:40
Z^n =1 , what is the value of z
1. n is a nonzero integer
2. z>0

1) n is non zero so the only way z ^n = 1 is if Z = 1 suff

2) z>0 which means n = 0 for z^n= 1 so Z can be anything insuff

I think it is A OA please

Kudos [?]: [0], given: 0

VP
Joined: 29 Apr 2003
Posts: 1402

Kudos [?]: 30 [0], given: 0

### Show Tags

08 May 2006, 00:07

reason why it cannot be A is because

z can be 1 or -1 when n=2! (satistfies given eq and option 1)!

Kudos [?]: 30 [0], given: 0

08 May 2006, 00:07
Display posts from previous: Sort by