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If x, y, and z are three integers, are they consecutive inte [#permalink]
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03 Jan 2014, 06:21
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The Official Guide For GMAT® Quantitative Review, 2ND EditionIf x, y, and z are three integers, are they consecutive integers? (1) z  x= 2 (2) x < y < z Data Sufficiency Question: 20 Category: Arithmetic Properties of numbers Page: 154 Difficulty: 600 GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition  Quantitative Questions ProjectEach week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution. We'll be glad if you participate in development of this project: 1. Please provide your solutions to the questions; 2. Please vote for the best solutions by pressing Kudos button; 3. Please vote for the questions themselves by pressing Kudos button; 4. Please share your views on difficulty level of the questions, so that we have most precise evaluation. Thank you!
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Math Expert
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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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03 Jan 2014, 06:22



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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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03 Jan 2014, 12:15
C statement 1. x=9 y=20 z=11 it can be anything.===insufficient. statement2. x<y<y. again insufficient.. both statement togather...8<9<10 or it cud be any sequence.. Sufficient. Ans is c.
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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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04 Jan 2014, 10:14
Statement (1) does not give any information about y. So, insufficient. Statement (2) tells that x<y<z; it could be 8<9<10 or 5<10<15; So, insufficient.
Both combined gives us the clue that x and z differ by 2 and that y is between x and z.
Hence, (C) is sufficient.



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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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05 Jan 2014, 11:25
Bunuel wrote: The Official Guide For GMAT® Quantitative Review, 2ND EditionIf x, y, and z are three integers, are they consecutive integers? (1) z  x= 2 (2) x < y < z Statement 1) z is greater than x by 2 , we don't know about y. Not sufficient. Statement 2) the integers need not be consecutive. Not sufficient. Combining the two statements, zx = 2 so y can to be between x and z as all are integers. Hence option C)
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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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05 Jan 2014, 12:25



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Re: If x, y, and z are three integers, are they consecutive inte [#permalink]
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