Probability of happening of an event is denoted by $p$ and probability of non-happening of the event is denoted by $q$. Relation between $p$ and $q$ is
(A) $p + q = 1$
(B) $p = 1, q = 1$
(C) $p = q -

Question

Probability of happening of an event is denoted by $p$ and probability of non-happening of the event is denoted by $q$. Relation between $p$ and $q$ is
(A) $p + q = 1$
(B) $p = 1, q = 1$
(C) $p = q - 1$
(D) $p + q + 1 = 0$

Accepted Answer

Step 1: (A) $p + q = 1$

Question

Solution