Complete the following statements :
(i)   Probability of an event E + Probability of the 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 _________ .

Explanation

i)Probability of an event E + Probability of the event not E=`1`

ii)The probability of an event that cannot happen is `0 `.Such an event is called -impossible event.

iii)The probability of an event that is certain to happen is `1`.Such an event is called -Sure event.

iv)The sum of the probabilities of all the elementary events of an experiment is `1`.

v)The probability of an event is greater than or equal to `0` and less than or equal to `1`.