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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## If x and y are odd integers tagged by: rolandprowess ##### This topic has 2 expert replies and 2 member replies ### Top Member ## If x and y are odd integers If x and y are odd integers, which of the following must always be a non-integer? A. xy B. x/y C. y/x D. xy/2 E. -xy How will i figure out a non-integer? OA D ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10197 messages Followed by: 497 members Upvotes: 2867 GMAT Score: 800 Top Reply Hi lheiannie07, We're told that X and Y are ODD integers. We're asked which of the following will always be a NON-INTEGER. This question can be solved by TESTing VALUES. IF... X=3 and Y=3 Answer A: 9 Answer B: 1 Answer C: 1 Answer D: 9/2 Answer E: -9 Final Answer: D GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Top Reply Hello. The key in this PS question is: "must always" be a non-integer. a) xy, the product of two odd integers is integer. OUT. b) x/y, if x=3 and y=1, then x/y is integer. So, it can be sometimes integer and sometimes not. OUT. c) as above. OUT. d) The product of to odd integers ALWAYS is an odd integer. So, xy/2 will be ALWAYS non-integer. CORRECT. e) as option a). OUT. I hope this answer can help you. I'm available if you'd like a follow up. Regards. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. ### Top Member Moderator Joined 07 Sep 2017 Posted: 3149 messages Followed by: 7 members EconomistGMATTutor wrote: Hello. The key in this PS question is: "must always" be a non-integer. a) xy, the product of two odd integers is integer. OUT. b) x/y, if x=3 and y=1, then x/y is integer. So, it can be sometimes integer and sometimes not. OUT. c) as above. OUT. d) The product of to odd integers ALWAYS is an odd integer. So, xy/2 will be ALWAYS non-integer. CORRECT. e) as option a). OUT. I hope this answer can help you. I'm available if you'd like a follow up. Regards. Thanks a lot! ### Top Member Moderator Joined 07 Sep 2017 Posted: 3149 messages Followed by: 7 members Rich.C@EMPOWERgmat.com wrote: Hi lheiannie07, We're told that X and Y are ODD integers. We're asked which of the following will always be a NON-INTEGER. This question can be solved by TESTing VALUES. IF... X=3 and Y=3 Answer A: 9 Answer B: 1 Answer C: 1 Answer D: 9/2 Answer E: -9 Final Answer: D GMAT assassins aren't born, they're made, Rich Thanks a lot! • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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