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If a and b are positive integers, which of the following is eq
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17 May 2021, 04:13
17 May 2021, 04:13
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Question Stats:
87% (00:59) correct
12% (00:45) wrong based on 8 sessions
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If ๐ and ๐ are positive integers, which of the following is equivalent to \((7a)^{5b}-(7a)^{2b}\)?
A. \((7a)^{3b}\)
B. \(7^b(a^5-a^2)\)
C. \((7a)^{2b}[(7a)^{3b}-1]\)
D. \((7a)^{2b}[49a^b-1]\)
E. \((7a)^{2b}[(7a)^5-1]\)
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A. \((7a)^{3b}\)
B. \(7^b(a^5-a^2)\)
C. \((7a)^{2b}[(7a)^{3b}-1]\)
D. \((7a)^{2b}[49a^b-1]\)
E. \((7a)^{2b}[(7a)^5-1]\)
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: If a and b are positive integers, which of the following is eq
[#permalink]
17 May 2021, 07:03
17 May 2021, 07:03
1
\((7a)^{5b}-(7a)^{2b}\)
Take \((7a)^{2b}\) common,
\((7a)^{2b}[(7a)^{3b}-1]\)
Answer C
Take \((7a)^{2b}\) common,
\((7a)^{2b}[(7a)^{3b}-1]\)
Answer C
gmatclubot
Re: If a and b are positive integers, which of the following is eq [#permalink]
17 May 2021, 07:03
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