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This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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Is y – x positive? (1) y > 0 (2) x = 1 - y A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.

Re: Number property [#permalink]
27 Mar 2009, 18:29

milind1979 wrote:

Is y – x positive? (1) y > 0 (2) x = 1 - y A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.

I think it's E.

In statement 1 x can be positive, or negative, nothin else is known - insuff. In statement 2 both x and y can be either positive, or negative - insuff.

Combining both statements does not help - x can be either negative or positive, and it cannot be determined whether x < or >y in case x is positive.

Re: Number property [#permalink]
14 Oct 2009, 08:39

IMO C.

Is y – x positive? (1) y > 0 (2) x = 1 - y

statement 1) NOT Sufficient , when x>y its negative and when y>x its positive

statement 2) NOT sufficient, given that x+y =1, we can say if y>0 then x<=0 (eg y=1 then x=0 and y-x is positive but when y=2 and x=-1 , y-x is positive) when x>0 then y<=0 (eg x=1 then y=0 and y-x is negative or when x=2 then y=-1 ,y-x is negative)

combining stmt 1 and 2: from stmt 1 we know y>0 and from stmt we know that y-x is always positive when y>0 (highlighted in red above)

so answer is C.

I see the original post from Mar 2009, can we get an OA for this ? _________________

Thanks, Sri ------------------------------- keep uppp...ing the tempo...

Press +1 Kudos, if you think my post gave u a tiny tip

Last edited by srini123 on 14 Oct 2009, 08:42, edited 1 time in total.