(ii) and (iv) can’t be the probability of occurrence of an event. So, (ii) and (iv) are the answers to our question.
Explanation: We know that,
0 ≤ probability ≤ 1 i.e. probability can vary from 0 to 1(both are inclusive) So, (i) 0 can be possible as 0 ≤ probability ≤ 1
(ii) \(-\frac{3}{4}\) is not possible as it is less than 0
(iii) \(\frac{3}{4}\) is possible as 0 ≤ probability ≤ 1
(iv) \(\frac{4}{3}\) is not possible as it is greater than 1
Conclusion: \(\frac{3}{4}\) and \(-\frac{3}{4}\) are the probabilities that cannot occur.
