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GMATPrep CAT1 Quant Question 1 (PS)

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GMATPrep CAT1 Quant Question 1 (PS) [#permalink] New post 24 Aug 2009, 15:38
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Someone please provide an explanation for the OA because I can't find it in my myriad of study materials. Thank you!
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Re: GMATPrep CAT1 Quant Question 1 (PS) [#permalink] New post 24 Aug 2009, 16:06
2^9/2=2^8

Note that only the power "3" is squared and not the whole expression (2^3)
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Re: GMATPrep CAT1 Quant Question 1 (PS) [#permalink] New post 24 Aug 2009, 16:19
LenaA wrote:
2^9/2=2^8

Note that only the power "3" is squared and not the whole expression (2^3)



Thanks! I was under the impression that for x^n^n it was x^(n*n) instead of x^(n^n). Can anyone help clear up the Powers order of operations rules for me?
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Re: GMATPrep CAT1 Quant Question 1 (PS) [#permalink] New post 24 Aug 2009, 17:17
gtg450g wrote:
LenaA wrote:
2^9/2=2^8

Note that only the power "3" is squared and not the whole expression (2^3)



Thanks! I was under the impression that for x^n^n it was x^(n*n) instead of x^(n^n). Can anyone help clear up the Powers order of operations rules for me?


(2^3)^2=2^6,

but 2^{3^2} = 2^9

hope this helps
Re: GMATPrep CAT1 Quant Question 1 (PS)   [#permalink] 24 Aug 2009, 17:17
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