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If g is the greatest common divisor of k+7 and n, where n and k are in

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G
Joined: 28 May 2018
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Schools: Tuck '21, ISB '20, NTU '20
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If g is the greatest common divisor of k+7 and n, where n and k are in  [#permalink]

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New post 17 Mar 2019, 04:24
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  45% (medium)

Question Stats:

67% (01:18) correct 33% (02:05) wrong based on 6 sessions

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If g is the greatest common divisor of \(k+7\) and n, where n and k are integers
What is the value of g?

1) \(n=20891\)
2) \(n=k+6\)

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Re: If g is the greatest common divisor of k+7 and n, where n and k are in  [#permalink]

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New post 17 Mar 2019, 04:39
From statement 2. g is the GCD of (K+7) & (K+6). Clearly (K+7) & (K+6) are consecutive no. (as K= integer) .
GCD of two consecutive integer is always 1. Hence statement 2 alone is sufficient.
Statement 2 : gave a constant value for n. To find value of g we need the value of K as well. So statement 2 is not sufficient.
Hence ans is B.

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Re: If g is the greatest common divisor of k+7 and n, where n and k are in  [#permalink]

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New post 17 Mar 2019, 07:32
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Re: If g is the greatest common divisor of k+7 and n, where n and k are in   [#permalink] 17 Mar 2019, 07:32
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If g is the greatest common divisor of k+7 and n, where n and k are in

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