Complete the statements:
(i) Probability of event E + Probability of event ‘not E’ = _______

(ii) The probability of an event that cannot happen is _______. Such an event is called _______

(iii) The probability of an event that is certain to happen is _______ . Such an event is called _______

(iv) The sum of the probabilities of all the elementary events of an experiment is _______

(v) The probability of an event is greater than or equal to _______ and less than or equal to _______