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compare exponents

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4722
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1630 [0], given: 390

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compare exponents [#permalink] New post 15 May 2018, 16:21
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Question Stats:

87% (00:14) correct 12% (00:31) wrong based on 8 sessions
Quantity A
Quantity B
\(0.8^{2}+0.8^{2}+0.8^{2}+0.8^{2}\)
\(1.6^{2}\)


A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Director
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Joined: 07 Jan 2018
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Re: compare exponents [#permalink] New post 16 May 2018, 01:43
Simplify qty A:
Take \(0.8^2\) common the expression reduces to
\(0.8^2(1+1+1+1)\)
or,\(0.8^2(4)\)
or, \(0.8^2 * 2^2\)
or, \((0.8*2)^2\)
or, \(1.6^2\) = qty B
option c
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Re: compare exponents   [#permalink] 16 May 2018, 01:43
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compare exponents

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