"Is K a positive number?
(1) |K^3| + 1 ... > |K^3|"
The correct answer is E. Also a very confusing DS sum...
Explanation:
Statement 1:
When u put all the values (i) positive values (ii) negative values (iii) between 0 and 1 (iv) between -1 and 0 (v) also 0
the sign does not change in the equation at all, hence it becomes a bit confusing to choose but the answer is that the equation 1 is insufficient to answer the question
that whether K is a positive number or no
Statement 2:
When u put all the values (i) positive values (ii) negative values (iii) between 0 and 1 (iv) between -1 and 0 (v) also 0
In the above equation, when you put all the values you find that the equation does not accept any negative integers but it does take all the negative fractions, between -1 and 0
hence it becomes difficult to get that whether K is positive or negative.
Combined :
Since both of them accept negative values as well as positive values, i.e k between 0 and -1 so you cannot decide whether K is positive or negative.
Hence the correct answer is E.
IT IS TIME TO BEAT THE GMAT
LEARNING, APPLICATION AND TIMING IS THE FACT OF GMAT AND LIFE AS WELL... KEEP PLAYING!!!
Whenever you feel that my post really helped you to learn something new, please press on the 'THANK' button.
