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If xy < 3, is x < 3 ?

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If xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 01:23
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If xy < 3, is x < 3 ?

(1) |y|> 1
(2) |x| < 3
[Reveal] Spoiler: OA
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Re: If xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 01:33
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If xy < 3, is x < 3 ?

(1) |y|> 1. Probably the easiest way to deal with this statement would be to plug some numbers. Notice that |y|> 1 means that y<-1 or y>1. Now, if y=2 and x=-4 then the answer is YES but if y=-2 and x=4 then the answer is NO. Not sufficient.

(2) |x| < 3 --> -3<x<3: directly gives an YES answer to the question. Sufficient.

Answer: B.

Hope it's clear.
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Re: Is xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 01:35
Answer B.

From the question:
xy<3 => x,y can be both positive and negative or, opposite signs. x(-2)y(3)<3
1. |y| > 1 => y>1 y<-1 => y can take 2, 3, 4, 5 or -2, -3, -4, -5.. if y=-6 and x=6 xy is -36 <3. If y=-1, x=-2 xy<3.
here x = 6 in one case and -2 in another case.
Hence Insufficient.
2. |x|<3 => -3<x<3 . No matter what the values of x are, it will be <3. Sufficient.
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Re: Is xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 03:46
I'm not quite sure that I've understood the question.

"Is xy < 3" This part I read as one question, "is x < 3?" This as another one.

Was the question "If xy<3, is x<3?"?

If I'm completely wrong please let me know why i might've misunderstood the semantics.

Thanks!
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Re: Is xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 03:49
Expert's post
Markusosv wrote:
I'm not quite sure that I've understood the question.

"Is xy < 3" This part I read as one question, "is x < 3?" This as another one.

Was the question "If xy<3, is x<3?"?

If I'm completely wrong please let me know why i might've misunderstood the semantics.

Thanks!


Yes, the question reads: "If xy < 3, is x < 3 ?"

Hope it's clear.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: Is xy < 3, is x < 3 ? [#permalink] New post 18 Jun 2012, 03:51
Bunuel wrote:
Markusosv wrote:
I'm not quite sure that I've understood the question.

"Is xy < 3" This part I read as one question, "is x < 3?" This as another one.

Was the question "If xy<3, is x<3?"?

If I'm completely wrong please let me know why i might've misunderstood the semantics.

Thanks!


Yes, the question reads: "If xy < 3, is x < 3 ?"

Hope it's clear.


Noticed it now. I must've misread earlier.

Thanks!
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Re: If xy < 3, is x < 3 ? [#permalink] New post 23 Feb 2014, 05:39
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Re: If xy < 3, is x < 3 ? [#permalink] New post 04 Apr 2014, 21:31
I missed the question. Had to read the question again after arriving at wrong answer.

Last edited by email2vm on 04 Apr 2014, 23:05, edited 1 time in total.
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Re: If xy < 3, is x < 3 ? [#permalink] New post 04 Apr 2014, 22:05
Ankit04041987 wrote:
If xy < 3, is x < 3 ?

(1) |y|> 1
(2) |x| < 3


Statement I is insufficient:

y = 0.1 then x < 30 it can be equal to 5 or -5.

Statement II is sufficient:

|x| < 3 means x is between -3 and 3 hence x will always be less than 3

Answer will be B.
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Re: If xy < 3, is x < 3 ?   [#permalink] 04 Apr 2014, 22:05
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