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5^10-5^8
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19 Feb 2021, 03:40
19 Feb 2021, 03:40
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Question Stats:
82% (00:40) correct
17% (00:22) wrong based on 23 sessions
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\(\frac{5^{10}-5^8}{5^9-5^7}=\)
0
1
5
25
125
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
0
1
5
25
125
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Retired Moderator
Joined: 16 Apr 2020
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WE:Education (Education)
Re: 5^10-5^8
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19 Feb 2021, 05:19
19 Feb 2021, 05:19
1
Carcass wrote:
\(\frac{5^{10}-5^8}{5^9-5^7}=\)
0
1
5
25
125
0
1
5
25
125
\(\frac{5^{10}-5^8}{5^9-5^7}\)
\(\frac{5^8 (5^2 - 1)}{5^7 (5^2 - 1)}\)
\(\frac{5^8}{5^7} = 5\)
Hence, option C
gmatclubot
Re: 5^10-5^8 [#permalink]
19 Feb 2021, 05:19
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