Question

Which of the following can not be the probability of an event?
(i) $\frac{2}{7}$
(ii) 3.8
(iii) 37%
(iv) -0.8
(v) 0.8
(vi) $\frac{-2}{5}$
(viii) $\frac{7}{8}$

Answer 1

The probability of an event cannot be (ii) 3.8 i.e. the probability of an even can not exceed 1.
(iv) i.e. -0.8 and
(vi) $\frac{-2}{5}$, This is bacause probability of an even can never be less than 1.