Is x>0?
(1)x²>36
(2)x^4>16
Don't have an OA.
(1)Assume x²=64 Hence x=±8 INSUFFICIENT
(2)Assume x^4=81 x=±3 INSUFFICIENT
Combining both we still can't get a resolution. Hence E. Is my logic correct?
DS on squares
This topic has expert replies
x = -2 also yields a result of 16 (-2*-2*-2*-2). Therefore, x >2 or x<-2 from statement 2.
combining these statements yields no useful new data (statement 1 told us x>6 or x<-6).
IMO E
combining these statements yields no useful new data (statement 1 told us x>6 or x<-6).
IMO E
vinod192 wrote:1. Insufficient as X having 2 values +6/-6
2. Sufficient as X>2 since 2>0 hence X>0
Answer is B.
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Eknight247 wrote:Is x>0?
(1)x²>36
(2)x^4>16
Don't have an OA.
(1)Assume x²=64 Hence x=±8 INSUFFICIENT
(2)Assume x^4=81 x=±3 INSUFFICIENT
Combining both we still can't get a resolution. Hence E. Is my logic correct?
Life is a Test