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GRE Math Challenge #114- x + y = 2

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GRE Math Challenge #114- x + y = 2 [#permalink] New post 15 May 2015, 11:17
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Question Stats:

94% (00:13) correct 5% (00:02) wrong based on 17 sessions
x + y = 2

Quantity A: x
Quantity B: y

• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
[Reveal] Spoiler: OA

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Re: GRE Math Challenge #114- x + y = 2 [#permalink] New post 23 Sep 2017, 08:46
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sandy wrote:
x + y = 2

Quantity A: x
Quantity B: y


There are infinitely many solutions to the equation x + y = 2
Here are two solutions:

#1) x = 0 and y = 2
In this case Quantity B is greater than Quantity A

#2) x = 2 and y = 0
In this case Quantity A is greater than Quantity B

Answer: D

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Brent
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Re: GRE Math Challenge #114- x + y = 2 [#permalink] New post 24 Sep 2017, 14:15
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Here are the possible condtions for values of x and y
- x = 1 and y = 1
- x = 2 and y = 0
- x = 0 and y = 2

so from this we can say that we cannot determine the values of x and y from the equation x + y = 2 !

Hence, Answer - Option D
Re: GRE Math Challenge #114- x + y = 2   [#permalink] 24 Sep 2017, 14:15
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GRE Math Challenge #114- x + y = 2

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