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compare exponents

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sandy
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compare exponents [#permalink] New post   15 May 2018, 16:21
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76% (00:22) correct 23% (00:41) wrong based on 21 sessions

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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.
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C
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B
amorphous
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Re: compare exponents [#permalink] New post   16 May 2018, 01:43
1
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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gmatclubot
Re: compare exponents [#permalink]
16 May 2018, 01:43
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