Is x greater than y?
(1) x > 2y
(2) x - y > 0
My answer was D, but the OA is B. Can someone please explain my error here?
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Is x greater than y?
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1) X>2y is not sufficeint as the inequality reverses for -ve numbers
2) x-y > 0 can be simplified to x>y and is sufficuient
2) x-y > 0 can be simplified to x>y and is sufficuient
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thanks for your replies...but i'm still not clear with this...
adnanbbukhari,
cubicle bound misfit,
I guess there is a very simple explanation to this which is simply not sinking in me. please help...
adnanbbukhari,
statement 1 simply says that x is greater than twice of y, regardless if its positive or negative. why would the inequality reverse for -ve numbers?1) X>2y is not sufficeint as the inequality reverses for -ve numbers
2) x-y > 0 can be simplified to x>y and is sufficuient
cubicle bound misfit,
why would you pick x=y=-1 when you are trying to evaluate if x>y? should you not pick two different numbers for x and y?suppose x = -1 and y = -1
then x>2y but x !> y
I guess there is a very simple explanation to this which is simply not sinking in me. please help...
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Hi Bluementor,
The premise given is x>2y we have to see whether it is valid only for those x which is greater than y? what if for some x which is less or equal to y the ineqaulity will hold true?
regards,
The premise given is x>2y we have to see whether it is valid only for those x which is greater than y? what if for some x which is less or equal to y the ineqaulity will hold true?
regards,
Cubicle Bound Misfit