(i) The quantifier is "There exists".The negation of this statement is as follows.There does not exist a number which is equal to its square.(ii) The quantifier is "For every".The negation of this statement is as follows.There exist a real number x such that x is not less than x+1.(iii) The quantifier is "There exists".The negation of this statement is as follows.There exists a state in India which does not have a capital.