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Source: — Data Sufficiency |
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by scoobydooby » Fri Oct 30, 2009 8:17 pm
would go with A.

1) if k=j+1, k and j are consecutive integers. any pair of consecutive integers will have the GCD as 1.
sufficient

2)jk may be 5, 10, 15, 20....
if jk=5; and j=5 and k=1 GCD is 1
if jk=20; and j=10 and k=2 GCD is 2
not sufficient

hence, A
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by crackgmat007 » Sat Oct 31, 2009 12:01 pm
A for me too. Only one value - 1.
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by mehravikas » Sat Oct 31, 2009 6:31 pm
Another vote for 'A'
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