Problem Solving

If y-x <0 then
A. x>y
B. Both x and y are positive
C. Only one of the two is negative
D. x < y
E. None of the above.

Ans : E, how come shouldnt it be A.

gmatrant wrote:If y-x <0 then
A. x>y
B. Both x and y are positive
C. Only one of the two is negative
D. x < y
E. None of the above.

Ans : E, how come shouldnt it be A.

This is a must be true question. Therefore, the answer option should hold true for all cases.

A. x>y

y=2, x =4

2-4 = -2<0. Eliminate.

B. Both x and y are positive
Both positive holds true for above case,

y=-2, x=2

-2 - (+2) = -4<0. Eliminate.

C. Only one of the two is negative

after looking at above cases we can Eliminate this as well.

D. x < y

y=-3, x=-6
-6-(-3) = -6+3 = -3<0. Eliminate.

E. None of the above.

Since we are only left with this option. Answer is E.


Hope its clear.

Your reasoning appears wrong!

You are saying :

For A, X>Y

y=2, x =4

2-4 = -2<0. Eliminate - why eliminate? This is in accordance with the given condition

sumithshah wrote:Your reasoning appears wrong!

You are saying :

For A, X>Y

y=2, x =4

2-4 = -2<0. Eliminate - why eliminate? This is in accordance with the given condition

Absolutely Right!

Lesson learnt. Just have to be bit more careful the next time.

but then still doesn't solve the problem - the OA is E! or the OA is wrong.

where did you get this question from @ the guy who started this thread

My vote is for A. There's no way that I can deduce E.

Its very easy question to be answered.. Even a child answers it isn't it?
A is an apt choice.

to SumitShah!!!!!

y-x<0

y=2, x=4

-2<0

So, the condition is true.. thn how can you eliminate A??

I think the answer is A, too.

The question was given to me by a friend of mine.. sorry not sure from where..