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# (7^6) + (7^8) =

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Magoosh GMAT Instructor
Joined: 28 Dec 2011
Posts: 4132

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19 Sep 2012, 13:44
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Difficulty:

5% (low)

Question Stats:

90% (01:32) correct 10% (00:27) wrong based on 77 sessions

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(7^6) + (7^8) =

(A) 7^14
(B) 7^16
(C) 7^48
(D) 14^14
(E) (50)*(7^6)

See a full discussion of this question and the underlying ideas at:
[Reveal] Spoiler: OA

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Mike McGarry
Magoosh Test Prep

Last edited by Bunuel on 19 Sep 2012, 15:57, edited 1 time in total.
Renamed the topic.
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Math Expert
Joined: 02 Sep 2009
Posts: 39753
Re: (7^6) + (7^8) = [#permalink]

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19 Sep 2012, 15:55
mikemcgarry wrote:
(7^6) + (7^8) =

(A) 7^14
(B) 7^16
(C) 7^48
(D) 14^14
(E) (50)*(7^6)

See a full discussion of this question and the underlying ideas at:

Factor out $$7^6$$ --> $$7^6+7^8=7^6(1+7^2)=7^6*50$$.

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Re: (7^6) + (7^8) =   [#permalink] 19 Sep 2012, 15:55
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