Statement 1: Either n or k or both are zero.sud21 wrote:n+k=0?
1) nk=0
2) n-k=0
If either n or k is equal to zero, (n + k) ≠0
If both are equal to zero, (n + k) = 0
Not sufficient
Statement 2: n is equal to k.
If n = k = 0, (n + k) = 0
If n = k ≠0, (n + k) ≠0
Not sufficient
1 & 2 Together: n = k = 0
Hence, (n + k) = 0
Sufficient
The correct answer is C.
