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# Data Sufficiency Questions

Author Message
Intern
Joined: 29 Jun 2008
Posts: 15

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08 Aug 2009, 23:37
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:05) wrong based on 2 sessions

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Hi All,

Question 1:

If K is not equal to 0,1,-1; Is 1/K > 0?

1. 1/k+1 > 0.
2. 1/k-1 >0.

Question 2:

Is the integer n a multiple of 15?

1. n is a multiple of 20.
2. n + 6 is a multiple of 3.

Question 3:

Is x*x*x*x + y*y*y*y > z*z*z*z?

1. x*x + y*y > z*z
2. x + y > z.

1. A.
2. C.
3. E.

--== Message from GMAT Club Team ==--

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Retired Moderator
Joined: 05 Jul 2006
Posts: 1734

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09 Aug 2009, 00:30
1
Question 1:

If K is not equal to 0,1,-1; Is 1/K > 0? ie: is k +ve

1. 1/k+1 > 0.
2. 1/k-1 >0.

from 1
k+1>0 ie: k>-1....insuff

from 2

k-1>0 , k>1 ..sufff

B

Question 2:

Is the integer n a multiple of 15? DOES N HAS 5,3 as factors

1. n is a multiple of 20.
2. n + 6 is a multiple of 3.
from 1
n has 4,5 as factors... insuff
from2
n has 3 as factor...insuff
both
suff...C

Question 3:

Is x*x*x*x + y*y*y*y > z*z*z*z? is x^4+y^4>z^4

1. x*x + y*y > z*z
2. x + y > z.

try plugging in numbers it is impossible to prove...E

1. A...... i think the answer should be B not A
2. C.
3. E.[/quote]
Manager
Status: Applying
Joined: 19 Jul 2009
Posts: 131
Location: United Kingdom
Concentration: General Management, Strategy
GPA: 3.65
WE: Consulting (Telecommunications)

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10 Aug 2009, 03:03
1
I agree with the conclusion drawn above ...

1) B
2) C
3) E

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: Data Sufficiency Questions   [#permalink] 10 Aug 2009, 03:03
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