If y is an integer and y = x + |x|, is y = 0?
1). x < 0
2). y < 1
If y
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Hi,
|x| = x if x>=0
|x| = -x if x<=0
So, y = x+x =2x, if x>=0
and y = x-x =0, if x<=0
minimum value of y is zero.
From(1):
x<0, so y=0
Sufficient
From(2):
y < 1
y is an integer and its minimum value is zero
So, y=0
Sufficient
Hence, D
|x| = x if x>=0
|x| = -x if x<=0
So, y = x+x =2x, if x>=0
and y = x-x =0, if x<=0
minimum value of y is zero.
From(1):
x<0, so y=0
Sufficient
From(2):
y < 1
y is an integer and its minimum value is zero
So, y=0
Sufficient
Hence, D
Cheers!
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If x ≥ 0, y = x + |x| = x + x = 2x ≥ 0gmat25 wrote:If y is an integer and y = x + |x|, is y = 0?
1). x < 0
2). y < 1
If x < 0, y = x + |x| = x - x = 0
Hence, y ≥ 0
Statement 1: As x < 0, y = 0 ---> Sufficient
Statement 2: As y < 1 and y ≥ 0, y = 0 ---> Sufficient
The correct answer is D.
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