?(The question can be rephrased to is K negative?)
1) (nk)^z > 0, where z is an integer that is not divisible by two
=> (negative *k)^ odd >0 => negative *k = Positive => k = negative Sufficient !
2) k < n
n = -ve, k<n => k is -ve and less than n (e.g. n = -1 and k < n => k < -1 =< k = negative) Sufficient!
Option D
:yawn: Gotta go and hit the bed ! will answer the rest tomm!
