Statement 1: x^y = 1sud21 wrote:XY>1?
1). X^Y=1
2). Y=-1
This is possible with either of the following cases,
- 1. x = any number and y = 0 --> xy = 0
2. x = 1 and y = any value --> xy may or may not be greater than 1
Statement 2: No information about x.
Not sufficient
1 & 2 together: As y = -1, x^y = x^(-1) = 1/x
Hence, 1/x = 1 --> x = 1
Hence, xy = -1 < 1
Sufficient
The correct answer is C.
