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Arthimetic Progression questions on the gmat

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by stock2007 » Mon Jan 07, 2008 8:33 pm
Do questions based on arithmetic progression or geometric progression,

sequences.. etc.. show up on the gmat

and in finding the ap does.. the nth term.. formuale like this


an = a1 + ( n-1) *d
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by parore26 » Tue Jan 08, 2008 5:20 am
I can't recall the exact question I had. However, I remember that there was one arithmetic progression question. The question was to find the sum of the first x terms. The sequence was alternating, i.e. +ve number followed by a -ve number and so made the question relatively easy. Hope this helps.
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by stock2007 » Tue Jan 08, 2008 9:06 am
ur kidding

im so scared now

i didnt know sequences like that were on the gmat

god help me
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by beatthegmat » Tue Jan 08, 2008 9:46 pm
I would not spend too much time worrying about these kinds of questions--they are extremely rare to find, and I would be surprised to see even one of these questions on the actual test.

Better to focus on the fundamentals: arithmetic, algebra, number theory, etc.
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by parore26 » Wed Jan 09, 2008 11:09 am
[b]*** The Question listed here is not a question that I saw on the actual GMAT ****
[/b]

Sorry if I scared you by the description of the question I didn't mean to. The question wasn't all that difficult. Here is what the question looked like.

The series was something like this: a1 = 2, a2 = -1, and for n>2 an = a(n-2) as in the (n-2)th term of the series. i.e a1=a3=a5=a7=a9=2 and a2=a4=a6=a8=10=-1 Find the sum of a1+a2+a3+...+a10

Obviously the sum here is 5. The question is really simple, and you didn't really need to know much about the theory behind arithmetic progressions. I think geometric progression is out of the question as it's much too complicated to be tested on the GMAT.
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by richardwang6430 » Sun Apr 20, 2008 4:13 am
I also think it is rare.
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by hillzheng » Mon May 12, 2008 5:03 pm
It is difficult subject.
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by ajaygshah » Sat Jun 28, 2008 1:52 pm
i am going to give my gmat in about 2 months from now. I am preparing for this area of quantitative section. It is a difficult topic but once you understand , its easy. The best help would be to go through the formulas before the test day instead of worrying about it for 2 months.. :)
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