Question

Probablity of an event is p find probablity of it's complementary event

Answer 1

he probability of event p is given by P(p) and the probability of its complement by P(p′).


In general this is to remember that the total event of two complementary events is always equal to 1, that is,


P(p)+P(p′) = 1


Thus the probability of complement of event p is given by P (p’) = 1 – P (p).