(i) The negation of statement p is as follows.
There exists a positive real number x, such that x – 1 is not positive.
(ii)The negation of statement q is as follows.
There exists a cat that does not scratch.
(iii) The negation of statement r is as follows.
There exists a real number x, such that neither x > 1 nor x < 1.
(iv) The negation of statement * is as follows. There does not exist a number x, such that 0 < x < 1.