raju232007 wrote:I think the ans should be C....
In GMAT the square root of a number always refers to the positive root...So in this case we have to assume x to be a positive number
statement 1:
sqrt(x)>y
Let x=4 and y=1
then sqrt(4)>1
Let x=1 and y=4
then sqrt(1)<4
statement 1 is not sufficient
You cant take x=1 & y=4
because these values do not hold true for statement I
You dont have to prove the statement I, it is given as a fact.
statement 2:
x^3>y
let x=2 and y=1 ......x^3>y
let x=1 and y=2 ......x^3<y
statement 2 is not sufficient
You cant take x=1 & y=2
because these values do not hold true for statement 2
You dont have to prove the statement 2, it is given as a fact.
As a general rule if both square root and cube of a number is greater than the other number,the number is always greater than the other number.
