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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 ## Need help with GMAT Prep questions ##### This topic has 2 member replies ## Need help with GMAT Prep questions Need help with the following data sufficiency questions: A. An integer greater than 1 that is not prime is called composite. If the two digit integer n is greater than 20, is n composite? 1. The tens digit of n is a factor of the units digit of n 2. The tens digit of n is 2 B. If the terms of a sequence are t1, t2, t3......tn what is the value of n? 1. The sum of n terms is 3124 2. The average (arithmatic mean) of n terms is 4 C. In the xy plane, what is the y intercept of Line L 1. The slope of line L is 3 times its y intercept 2. the x intercept of line L is -1/3 D. Of the 60 animals on a certain farm 2/3 are either pigs or cows. how many of the animals are cows? 1. The farm has more than twice as many cows are it has pigs 2. The farm has more than 12 pigs E. In a typical rectangular coordinate system (I, II, III, IV quadrants), does line K intersect quandrant II? 1. The slope of K is -1/6 2. The Y intercept of K is -6 Regards MSD _________________ When the going gets tough, the tough gets going. Master | Next Rank: 500 Posts Joined 19 May 2008 Posted: 246 messages Upvotes: 7 Test Date: 06/30/2008 Target GMAT Score: 730 Hi MSD_2008, Please post each problem as a different post. Q1 . for stmt 1 . the number could have any ten digits. But if unit digit is a factor it can not be prime. cause say digit is XY then 10X+Y is the digit. but Y = kX hence the digit is 10X+kX always divisible by X>=2. Sufficient. hence IMO it is A. let me know the OA. _________________ Cubicle Bound Misfit Senior | Next Rank: 100 Posts Joined 29 Jun 2008 Posted: 66 messages Upvotes: 1 Yes. the OA for 1st question is indeed A. Will post the other questions as separate posts. MSD _________________ When the going gets tough, the tough gets going. • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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