If the probability of occurence of an event is p then the probability of non-happening of this event is
Question:
If the probability of occurence of an event is p then the probability of non-happening of this event is [CBSE 2013C]
(a) (p − 1)
(b) (1 − p)
(c) p
(d) $\left(1-\frac{1}{p}\right)$
Solution:
P(occurence of an event) = p
P(non-occurence of this event) = 1 − p
Hence, the correct answer is option (b).