Bunuel wrote:

nayasnayas wrote:

Is n < 0 ?

(1) m < n

(2) -n < m

My answer says, it would be C, although some expert says it will be E.

Could anyone please advice !

Thanks in advance.

Is n < 0 ?(1) m < n. n is greater than some number m. This is clearly insufficient to say whether n is negative. Not sufficient.

(2) -n < m --> 0 < m + n. The sum of n and some number m is positive. This is also insufficient to say whether n is negative. Not sufficient.

(1)+(2) We can sum the inequalities with the signs in the same direction: m + (-n) < n + m --> 2n > 0 --> n > 0. Sufficient.

Answer: C.

Hope it helps.

Hey Bunuel,

I totally understand the explanation, but have one doubt. If we put values in the equations my observation is coming out a little different please correct me where I am wrong.

1. m<n

m=2;

n=8;

2. -n<m

m=2;

n= -8;

Adding 1 and 2

we get -n<m<n;

or

-8<2<8;

So by just considering n as +ve value both conditions can be satisfied. Please correct me where I am wrong