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Quant: "the difference between x & y" [#permalink]
28 Jun 2016, 10:22
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On the GRE, if we encounter a question that states that: "The differences of X & Y is 4" does it mean:
Xy=4
OR
YX=4
Or We need to take both situation 1 & Situation 2 into account and solve for X &Y
I'm asking because some study guides tell us that we need to assume scenario 1, but I find it odd.




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Re: Quant: "the difference between x & y" [#permalink]
28 Jun 2016, 12:07
kanav wrote: On the GRE, if we encounter a question that states that: "The differences of X & Y is 4" does it mean:
Xy=4
OR
YX=4
Or We need to take both situation 1 & Situation 2 into account and solve for X &Y
I'm asking because some study guides tell us that we need to assume scenario 1, but I find it odd. Hi Kanav, Its usually the first case, i.e. X  Y. Do you have some examples? Regards,
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Re: Quant: "the difference between x & y" [#permalink]
28 Jun 2016, 12:11
sandy wrote: kanav wrote: On the GRE, if we encounter a question that states that: "The differences of X & Y is 4" does it mean:
Xy=4
OR
YX=4
Or We need to take both situation 1 & Situation 2 into account and solve for X &Y
I'm asking because some study guides tell us that we need to assume scenario 1, but I find it odd. Hi Kanav, Its usually the first case, i.e. X  Y. Do you have some examples? Regards, Why can we not write the statement as xy ? Because the question stem states the difference between x & y. It doesn't state xy or yx



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Re: Quant: "the difference between x & y" [#permalink]
28 Jun 2016, 15:10
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It depends on the question. It can be Y  X, depends on the question. This can be a productive conversation if you have particular Questions as examples. Regards,
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Re: Quant: "the difference between x & y" [#permalink]
04 Feb 2018, 23:11
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"The differences of X & Y is 4" means that "The differences of 10 & 6 is 4" for example.
You need to assume scenario 1.



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Re: Quant: "the difference between x & y" [#permalink]
25 Apr 2018, 13:08
Yes, it will be great if you can give some examples because I highly doubt that GRE will have a question just with that sentence. They will be providing more infor for a question like this.



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Re: Quant: "the difference between x & y" [#permalink]
25 Apr 2018, 13:14
One of the examples I found was in Barrons book. " If a is equal to the sum of b and c, which of the following is equal to the difference of b and c? A. abc B. ab+c C. ac D. a2c E. ab2c" The answer considers it to be bc and not vice versa.



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Re: Quant: "the difference between x & y" [#permalink]
25 Apr 2018, 18:43
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Hey @kruttikaaggarwal, Refer page no: 17 of "Math Conventions" released by ETS (Testmaker of GRE) It says: " Unless otherwise indicated the phrase "difference between two quantities" is assumed to mean positive difference", that is greater quantity minus lesser quantity.You can get the pdf here: https://www.ets.org/s/gre/pdf/gre_math_conventions.pdfHope this helps
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Re: Quant: "the difference between x & y"
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