Inequalities (V)

[skim333]

If x is not equal to 0, is x^2 + 1 / x > y?

(I) x = y

(2) y > 0


OA is C

[mehravikas]

We don't know whether x and y and positive or negative.

take y = -1 and 1

statement 1 - is insufficient because

(-1)^2 - 1/1 > 1 - false
(1)^2 + 1/1 > 1 - true

statement 2 is insufficient because it gives no info about x

combine the statement and you can use only positive hence answer 'C'

[nervesofsteel]

We don't know whether x and y and positive or negative.

take y = -1 and 1

statement 1 - is insufficient because

(-1)^2 - 1/1 > 1 - false
(1)^2 + 1/1 > 1 - true

statement 2 is insufficient because it gives no info about x

combine the statement and you can use only positive hence answer 'C'

Hi Vikas ,

If we are taking y = -1 in A then shouldn't it be

(-1)^2 - 1/1 > -1 ..?? which is true..

Please explain...

[mehravikas]

Sorry it was my mistake, pick fractional values for y. i.e. -1/3, 1/3

you should get the answer.

We don't know whether x and y and positive or negative.

take y = -1 and 1

statement 1 - is insufficient because

(-1)^2 - 1/1 > 1 - false
(1)^2 + 1/1 > 1 - true

statement 2 is insufficient because it gives no info about x

combine the statement and you can use only positive hence answer 'C'

Hi Vikas ,

If we are taking y = -1 in A then shouldn't it be

(-1)^2 - 1/1 > -1 ..?? which is true..

Please explain...