#### If the probability of an event is p, the probability of its complementary event will be (A) p – 1          (B) p                (C) 1 – p         (D)$1-\frac{1}{p}$

Solution.    Probability; probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
The probability of an event = p
Let the probability of its complementary event = q
We know that total probability is equal to 1.
Hence,     p + q = 1
q = 1 – p