Needgmat wrote:Is n an integer?
1) n^2 is an integer.
2) under root n is an integer.
Statement 1:
n² = 1, 2, 3, 4...
If we take the square root of both sides, we get the following options for n:
n = 1, √2, √3, 2...
If n=1, then n is an integer.
If n=√2, then n is NOT an integer.
INSUFFICIENT.
Statement 2:
√n = 1, 2, 3, 4...
If we square both sides, we get the following options for n:
n = 1, 4, 9, 16...
In every case, n is an integer.
SUFFICIENT.
The correct answer is
B.
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