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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 ## Inequality Question........ Help ##### This topic has 2 expert replies and 6 member replies ## Inequality Question........ Help Manhattan GMAT Inequalities Problem Set Q 5 If x>y ,and x<6> -3,what is the largest prime number that could be equal to x+y? My answer : x can be 0 1 2 3 4 5 y can be -2 -1 0 1 2 3 4 (as it is less that x) So largest prime no is 5+2 =7 But this is wrong according to solution Please help... ### GMAT/MBA Expert GMAT Instructor Joined 03 Mar 2008 Posted: 3380 messages Followed by: 1499 members Upvotes: 2256 GMAT Score: 800 hey. when you post problems like this one, with "<" and ">" signs, you have to disable HTML. otherwise, the forum will "think" that the inequality signs are actually html tags, and will interpret them accordingly - an action that includes ignoring all the text between a "<" and a ">" if it doesn't constitute a valid html tag. therefore, large swaths of your text are disappearing from the problem. to fix this: check the Disable HTML in this post box underneath the text when you're posting. _________________ Ron has been teaching various standardized tests for 20 years. -- Pueden hacerle preguntas a Ron en castellano Potete chiedere domande a Ron in italiano On peut poser des questions à Ron en français Voit esittää kysymyksiä Ron:lle myös suomeksi -- Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur. Yves Saint-Laurent -- Learn more about ron Free Manhattan Prep online events - The first class of every online Manhattan Prep course is free. Classes start every week. Newbie | Next Rank: 10 Posts Joined 11 Jul 2008 Posted: 4 messages And what is the answer in the solution i think 3 is the answer _________________ Beat The GMAT GUYS Master | Next Rank: 500 Posts Joined 04 Jun 2008 Posted: 104 messages Upvotes: 6 Ok I have disabled HTML..Ques is Manhattan GMAT Inequalities Problem Set Q 5 If x>y ,and x<6 and y> -3,what is the largest prime number that could be equal to x+y? My answer : x can be 0 1 2 3 4 5 y can be -2 -1 0 1 2 3 4 (as it is less that x) So largest prime no is 5+2 =7 But this is wrong according to solution Please help... Answer is not 3... Please explain why u said 7 is wrong.. Last edited by swati.sug on Sat Jul 12, 2008 12:17 pm; edited 1 time in total Master | Next Rank: 500 Posts Joined 04 Jun 2008 Posted: 104 messages Upvotes: 6 Ans in manhattan gmat says: Max value for x is 6 and since x>y max value for y is 6. thus x + y can have max value 12. The largest prime no less than 12 is 11 . Thus answer is 11. Is this right approach for such questions? Senior | Next Rank: 100 Posts Joined 10 Jul 2008 Posted: 31 messages Upvotes: 1 swati.sug wrote: Ans in manhattan gmat says: Max value for x is 6 and since x>y max value for y is 6. thus x + y can have max value 12. The largest prime no less than 12 is 11 . Thus answer is 11. Is this right approach for such questions? Does the problem state that x<6 or x<=6? as in, less than, or less than or equal to? because if it's 'less than', then the manhattan gmat answer doesn't make sense. the max value for x would be 5 (assuming x belongs to I). It seems to me that the answer should be 7 as well, since the max value for x is 5, and the max value for y is 4. 5+4=9. largest prime under 9 is 7. Unless, of course, x and y are not integers. if x=5.9 and y=5.1, then x+y would be 11... any thoughts? Master | Next Rank: 500 Posts Joined 04 Jun 2008 Posted: 104 messages Upvotes: 6 Yes it says less than and not less than or equal to. I think the answer is wrong then.. Legendary Member Joined 07 Jul 2008 Posted: 829 messages Followed by: 3 members Upvotes: 84 Target GMAT Score: 700+ Even i think Manhattan answer is wrong if its just greater than and not(>=).. My answer is also 3. X can take values from - infinity to positive 5. Y can take values from -2 to positive infinity. but since X>Y X can take values, 5,4,3,2,1,0 and y can take only -2 and -1 ( as -1 is smaller than 0) so the prime number will be 5 +(-2) = 3 let me know if my understanding is right. ### GMAT/MBA Expert GMAT Instructor Joined 02 Jun 2008 Posted: 2326 messages Followed by: 348 members Upvotes: 1090 GMAT Score: 780 tzink has the right idea above- the question doesn't tell you that x and y are integers. So, x could be 5.6 and y could be 5.4, and x+y could be 11. • Award-winning private GMAT tutoring Register now and save up to$200

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