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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 ## The value of the variable E is determined by adding the reci ##### This topic has 1 expert reply and 0 member replies ### Top Member ## The value of the variable E is determined by adding the reci ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult The value of the variable E is determined by adding the reciprocals of the first 10 even natural numbers. Which of the following can be a possible value of the reciprocal of E? A. 0.154 B. 0.1818 C. 0.667 D. 2 E. 3.03 OA C Source: e-GMAT ### GMAT/MBA Expert GMAT Instructor Joined 02 Jun 2008 Posted: 2528 messages Followed by: 353 members Upvotes: 1090 GMAT Score: 780 Top Reply BTGmoderatorDC wrote: The value of the variable E is determined by adding the reciprocals of the first 10 even natural numbers. Which of the following can be a possible value of the reciprocal of E? A. 0.154 B. 0.1818 C. 0.667 D. 2 E. 3.03 This question makes no sense - as defined, E represents a single numerical value, so E is not a "variable". And if E has a single numerical value, so does its reciprocal, so it makes no sense to ask what "can be a possible value of the reciprocal of E". An answer is either equal to the reciprocal of E or it isn't. And then if you actually compute the value of the reciprocal they describe exactly, you don't even find that value among the answer choices (the 'right' answer, C, is a decent estimate, but the true right answer here is 5040/7381, which, when rounded off to three decimal places, is 0.683). So I don't think there's any reason to look at the question. It's testing something related to what is called a 'harmonic mean', but the GMAT would never expect a test taker to know anything about harmonic means (though if you did, you could answer this quickly). Instead, the best approach here seems to be to just quickly estimate everything, since the right answer (if C were changed to be the right answer) is distant from any other answer choice. _________________ 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 • FREE GMAT Exam Know how you'd score today for$0

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