Is x < y? (1) z < y (2) z < x : GMAT Data Sufficiency (DS)
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# Is x < y? (1) z < y (2) z < x

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Is x < y? (1) z < y (2) z < x [#permalink]

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30 Jan 2012, 16:24
00:00

Difficulty:

5% (low)

Question Stats:

92% (01:26) correct 8% (00:20) wrong based on 189 sessions

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Is x < y?

(1) z < y
(2) z < x
[Reveal] Spoiler: OA

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Re: Is x < y? [#permalink]

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30 Jan 2012, 16:30
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Expert's post
DesecratoR wrote:
Is x < y?
(1) z < y
(2) z < x

Well, I don't agree with answer given, and I 'm little bit frustrated because I think this is an easy question. Need your opinion and help if I 'm wrong. Thank you!

My reasoning:

Stmt 1:
z<y, ok. Doesn't provide information about relation between x and y. If z>x then x<z<y. But if z<x, we don't know anything about relation between x and y. So, not sufficient.

Stmt 2:
z<x, ok. z could be also less than y, hence no information about relation between x and y. Not sufficient.

Taken together, still not sufficient.

You are right for (1)+(2) we just have that x and y are more than some number z, we clearly cannot say whether x<y. So, the answer is E.

Notice that if (2) were x<z then the answer would be C, as for (1)+(2) we would have x<z<y --> x<y.

Hope it helps.
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Re: Is x < y? [#permalink]

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30 Jan 2012, 16:34
Bunuel wrote:
DesecratoR wrote:
Is x < y?
(1) z < y
(2) z < x

Well, I don't agree with answer given, and I 'm little bit frustrated because I think this is an easy question. Need your opinion and help if I 'm wrong. Thank you!

My reasoning:

Stmt 1:
z<y, ok. Doesn't provide information about relation between x and y. If z>x then x<z<y. But if z<x, we don't know anything about relation between x and y. So, not sufficient.

Stmt 2:
z<x, ok. z could be also less than y, hence no information about relation between x and y. Not sufficient.

Taken together, still not sufficient.

You are right for (1)+(2) we just have that x and y are more than some number z, we clearly cannot say whether x<y. So, the answer is E.

Notice that if (2) were x<z then the answer would be C, as for (1)+(2) we would have x<z<y --> x<y.

Hope it helps.

Man! You deserve gold medal! You are always here. Just can't thank you enough.
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Re: Is x < y? [#permalink]

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28 Apr 2012, 23:06
A is surely not the answer ... does not make any sense .

1.z<y does not say anything about x so insufff...
2.plotting number line

z--------x------y
z--------y------x
Both can be true so insufficient .

E
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26 May 2016, 01:02
Is x < y?

(1) z < y
(2) z < x
Math Expert
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Re: Is x < y? (1) z < y (2) z < x [#permalink]

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26 May 2016, 01:17
nalinnair wrote:
Is x < y?

(1) z < y
(2) z < x

Merging topics. Please refer to the discussion above.
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Re: Is x < y? (1) z < y (2) z < x [#permalink]

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17 Jul 2016, 23:32
DesecratoR wrote:
Is x < y?

(1) z < y
(2) z < x

Answer is E in 2 seconds
(1) z < y
No info about X ; INSUFFICIENT

(2) z < x
No info about Y ; INSUFFICIENT

MERGE:- z < x < y OR z < y < x
No way to compare x or y
INSUFFICIENT

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Re: Is x < y? (1) z < y (2) z < x [#permalink]

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01 Oct 2016, 22:09
Though this is a really easy questions. Concepts like this tends to freak my nerves during the tests.

it goes a long way in helping nerves freaks like me.
Re: Is x < y? (1) z < y (2) z < x   [#permalink] 01 Oct 2016, 22:09
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