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rahulsaxena8
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What is the difference between option 1) and 2). Aren't they same thing?
What is the difference between option 1) and 2). Aren't they same thing?
Gmat prep DS prob modulus
This topic has expert replies
What is the difference between option 1) and 2). Aren't they same thing?
Source: Beat The GMAT — Data Sufficiency |
1) |x-3| >= y
2)|x-3|<= -y
If you write 2 a different way...
2) - |x-3|>= y
You have to switch the signs when u divide or multply a negative. So no, they are not the same.
y>=0 (given by the problem)
1) y could be 100 and x would be 103 or -97, or y could be 101 and x would be 104 or -98
in suff
2) since it's saying that the absolute value of x-3 is <= to negative y, y must either be 0 or a negative number. But from the equation, we know that y>=0, so Y MUST be 0, so X MUST be 3.
2)|x-3|<= -y
If you write 2 a different way...
2) - |x-3|>= y
You have to switch the signs when u divide or multply a negative. So no, they are not the same.
y>=0 (given by the problem)
1) y could be 100 and x would be 103 or -97, or y could be 101 and x would be 104 or -98
in suff
2) since it's saying that the absolute value of x-3 is <= to negative y, y must either be 0 or a negative number. But from the equation, we know that y>=0, so Y MUST be 0, so X MUST be 3.
