Solution:
Given that, 
of men and 
of women have grey hair
Total 
of people having grey hair 
Hence, the Probability of having a selected person male having grey hair, 
Suppose that of men and of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.
of men and of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.Suppose that of men and of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.
of men and of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.