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# Is z+z<z? 1) -4z>4z 2) z^3<z^2

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Senior Manager
Joined: 22 Sep 2005
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Is z+z<z? 1) -4z>4z 2) z^3<z^2 [#permalink]  18 Oct 2006, 12:26
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Is z+z<z?

1) -4z>4z
2) z^3<z^2
SVP
Joined: 05 Jul 2006
Posts: 1518
Followers: 5

Kudos [?]: 119 [0], given: 39

Is z+z<z?

1) -4z>4z
2) z^3<z^2

IS Z>Z/2 NOT TRUE ONLY IF Z IS NEGATIVE

FROM ONE

-Z>Z THUS Z IS NEGATIVE ...SUFF

FROM TWO

Z IS NEGATIVE > OR <1 OR A POSITIVE FRACTION

i SAY A

Last edited by yezz on 18 Oct 2006, 13:45, edited 2 times in total.
Senior Manager
Joined: 08 Jun 2006
Posts: 342
Location: Washington DC
Followers: 1

Kudos [?]: 24 [0], given: 0

I think it is A.

z + z < z is possible for all negative - integers and fractions

From 1) we get z is negative

From 2) Not suff
Senior Manager
Joined: 11 May 2006
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Re: DS: Integers [#permalink]  18 Oct 2006, 13:41
netcaesar wrote:
Is z+z<z?

1) -4z>4z
2) z^3<z^2

A

question : is z < 0 ?

from 1) 0 > 8z or z < 0 hence sufficient

from 2) z could be either negative or positive ( 0 < z < 1)
Director
Joined: 23 Jun 2005
Posts: 847
GMAT 1: 740 Q48 V42
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Kudos [?]: 32 [0], given: 1

Re: DS: Integers [#permalink]  18 Oct 2006, 18:03
netcaesar wrote:
Is z+z<z?

1) -4z>4z
2) z^3<z^2

A

2z<z only if z is -ve.

Statement 1: z is negative SUFF

Statement 2: 0<z<1, or z<0 INSUFF
Senior Manager
Joined: 13 Sep 2006
Posts: 282
Location: New York
Followers: 1

Kudos [?]: 8 [0], given: 0

Late but A for me as well.

Statement 2 could be a fraction or a negative number.
_________________

"Never let the fear of striking out get in your wayâ€

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