I believe that the problem has been transcribed incorrectly.
DS162 in the OG12 reads as follows:
abhirup1711 wrote:If n and k are positive integers, is √(n+k) > 2√n ?
(1) k > 3n
(2) n + k > 3n
√(n+k) > 2√n?
Squaring both sides, we get:
n+k > 4n
k > 3n.
Question stem rephrased: Is k > 3n?
Statement 1: k > 3n
SUFFICIENT.
Statement 2: n + k > 3n
k > 2n.
If n=1 and k=3, then k=3n.
If n=1 and k=10, then k>3n.
INSUFFICIENT.
The correct answer is
A.
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