What is the value of x? (1) x0 (2) x^(1/2) = 9

Question

What is the value of x?

(1)  x>0

(2)  \sqrt{x} = 9

chetan2u · Answer

1) x>0.
x could be anything => 2, 100.5, 2789
Insufficient

2)  \sqrt{x}=9

As in GMAT, a square root can only be positive, or we can take square root only if positive integers. Thus x = 81. 
Sufficient

B

MarmikUpadhyay · Answer

Agreed with your solution. 
But   x = 81     not 3  .
Please check.
Otherwise answer is option  B .

chetan2u · Answer

Thanks 🙏 
Corrected the typo.

What is the value of x? (1) x>0 (2) x^(1/2) = 9