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maolivie
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 Posted: Thu Jul 05, 2007 6:46 pm Post subject: Gmatprep exponents |
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(2^(4-1)^2)/(2^(3-2))
1- 2^8
2- 2^7
3-2^6
4-2^5
2-2^4
I keep getting 2^6, OA is 2^8, can someone please clarify or let me know what I am doing wrong. PEMDAS right?
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thumpin_termis
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| Posted: Thu Jul 05, 2007 7:11 pm Post subject: |
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The main point here is that:
2^3^2 is NOT equal to (2^3)^2
1. 2^3^2 = 2^9
2. (2^3)^2 = 2^6
If you see that, then it's
(2^3^2) / 2^1 = 2^9 / 2 = 2^8 |
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maolivie
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| Posted: Thu Jul 05, 2007 7:23 pm Post subject: |
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ahh interesting, I didn't see that at first.
Thanks.
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