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Arithmetic Sequence and Geo Sequence, Etc Appear on GMAT?

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Eternal Intern
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Joined: 07 Jun 2003
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Arithmetic Sequence and Geo Sequence, Etc Appear on GMAT? [#permalink] New post 16 Jul 2003, 12:12
I saw one ETS question that had you use I think a formula for arithmetic. Is it really on the test, and why because it's not in the math reference of official guide?

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 [#permalink] New post 18 Jul 2003, 01:10
You are not required to know explicit formulas for arithmetic or geometric series. In fact, I discourage my students from even learning "specialized" formula such as sum of 1, 2, ..., n, permutations, combination, binomial, etc. -- only basic formulae like N * average = sum, and D = R * T. Memorizing formulae distracted and discourages the understanding of the underlying principle.

However, you are expected to understand AVERAGES, and, with that understanding, you should be able to find the average and sum of ANY arithmetic sequence with ANY starting number.
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AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

  [#permalink] 18 Jul 2003, 01:10
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Arithmetic Sequence and Geo Sequence, Etc Appear on GMAT?

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