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If y is an integer and
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23 Feb 2021, 14:41
23 Feb 2021, 14:41
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Question Stats:
73% (00:46) correct
26% (00:54) wrong based on 26 sessions
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If y is an integer and \(\sqrt{60y}\) is an integer, which of the following could be the value of y?
A 15
B 30
C 60
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
A 15
B 30
C 60
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: If y is an integer and
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23 Feb 2021, 19:26
23 Feb 2021, 19:26
1
\(\sqrt{60y}\) is an integer
\(\sqrt{2*2*3*5*y}\)
To get an integer, we will need 3 * 5 = 15, answer will be 30 so y=15
By taking y = 30, the answer will be non-integer.
take y = 60, the answer will be 60.
Answer A C
\(\sqrt{2*2*3*5*y}\)
To get an integer, we will need 3 * 5 = 15, answer will be 30 so y=15
By taking y = 30, the answer will be non-integer.
take y = 60, the answer will be 60.
Answer A C
gmatclubot
Re: If y is an integer and [#permalink]
23 Feb 2021, 19:26
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