gmatprep2011 wrote:
Is n > 6?
(1) \(\sqrt{n} > 2.5\)
(2) \(n > \sqrt{37}\)
Target question: Is n > 6? Statement 1: √n > 2.5 Square both sides to get: n > (2.5)²
Evaluate to get: n > 6.25
If n > 6.25, then
we can be CERTAIN that n > 6Since we can answer the
target question with certainty, statement 1 is SUFFICIENT
Statement 2: n > √37 First recognize that √36 < √37
In other words, 6 < √37
Statement 2 tells us that √37 < n
So, we can COMBINE the inequalities to get 6 < √37 < n
From this, we can conclude that
n > 6Since we can answer the
target question with certainty, statement 2 is SUFFICIENT
Answer:
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