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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 terms of the sequence {An}, where n is a positive intege tagged by: Max@Math Revolution This topic has 1 expert reply and 0 member replies GMAT/MBA Expert The terms of the sequence {An}, where n is a positive intege [GMAT math practice question] The terms of the sequence {An}, where n is a positive integer, satisfy A1=81, A2=82, A3=83, and An+3=An+4. Which of the following cannot be a value of An? A. 801 B. 802 C. 803 D. 804 E. 805 _________________ Math Revolution Finish GMAT Quant Section with 10 minutes to spare. The one-and-only Worldâ€™s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy. Only$149 for 3 month Online Course
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The terms of the sequence can be divided into three groups:
A1 = 81, A4 = 85, A7 = 89, â€¦ : These have a remainder of 1 when they are divided by 4.
A2 = 82, A5 = 86, A8 = 90, â€¦ : These have a remainder of 2 when they are divided by 4.
A3 = 83, A6 = 87, A9 = 91, â€¦ : These have a remainder of 3 when they are divided by 4.
No term of the sequence is a multiple of 4.

Since 804 is a multiple of 4, it cannot be a term of the sequence.

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