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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 the 1st term of a sequence is 0 and the 2nd term is 1... tagged by: AbeNeedsAnswers ##### This topic has 3 expert replies and 0 member replies ## If the 1st term of a sequence is 0 and the 2nd term is 1... ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult If the 1st term of a sequence is 0 and the 2nd term is 1, is the 5th term 2 ? (1) Each odd-numbered term is either 0 or 2. (2) The 3rd term is 2. E ### GMAT/MBA Expert GMAT Instructor Joined 02 Jun 2008 Posted: 2475 messages Followed by: 350 members Upvotes: 1090 GMAT Score: 780 Statement 1 tells us that the fifth term is either 0 or 2. There's no other information anywhere in the question that tells us anything about the fifth term in the sequence, so using both statements, we have two possibilities, and the answer is E. _________________ If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12989 messages Followed by: 1249 members Upvotes: 5254 GMAT Score: 770 AbeNeedsAnswers wrote: If the 1st term of a sequence is 0 and the 2nd term is 1, is the 5th term 2 ? (1) Each odd-numbered term is either 0 or 2. (2) The 3rd term is 2. E Given: term1 = 0 and term2 = 1 Target question: Does term5 equal 2? Once we scan the two statements, we can probably jump straight to . . . Statements 1 and 2 combined There are several possible sequences that satisfy BOTH statements. Here are two: Case a: {0, 1, 2, 0, 2,...}. In this case, the answer to the target question is YES, term5 IS 2 Case b: {0, 1, 2, 0, 0,...}. In this case, the answer to the target question is NO, term5 is NOT 2 Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT Answer: E Cheers, Brent _________________ Brent Hanneson â€“ Creator of GMATPrepNow.com Use my video course along with Sign up for free Question of the Day emails And check out all of these free resources GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMATâ€™s FREE 60-Day Study Guide and reach your target score in 2 months! ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10197 messages Followed by: 496 members Upvotes: 2867 GMAT Score: 800 Hi All, We're told that the 1st term of a sequence is 0 and the 2nd term is 1. We're asked if the 5th term in the sequence is 2. To properly answer any sequence question, we need to know the underlying pattern or formula behind it. (1) Each odd-numbered term is either 0 or 2. Fact 1 limits the possible values for the 5th term - it can only be 0 or 2. However, we don't know which one it is, so the answer to the question could be NO (if the 5th term is 0) or YES (if the 5th term is 2). Fact 1 is INSUFFICIENT (2) The 3rd term is 2. Fact 2 gives us another term to work with (so we know that the sequence begins with 0, 1, 2...), but this tells us nothing about how the sequence "works", so we cannot deduce the values of any other terms in the sequence. Fact 2 is INSUFFICIENT Combined, we know... Each odd-numbered term is either 0 or 2. The 3rd term is 2. Even combined, we still don't know what the 5th term is; with two possible values (and 2 different corresponding answers), the answer could be YES OR NO. Combined, INSUFFICIENT Final Answer: E GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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