Suppose that 5 males out of 100 and 25 females out of l000 are colour blind. A colour blind person is chosen at random. What is the probability that a male is chosen (assume that the number of males and females are equal)?

Suppose that 5% of men and 0.25% 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 5% of men and 0.25% 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.

If out of 20 consecutive whole numbers two are chosen at random, then find the probability that their sum is odd.

Two natural numbers x and y are chosen at random. What is the probability that x^(2) + y^(2) is divisible by 5?

Male and female have equal number of autosomes.

A basket contains 20 apples and 10 oranges out of which 5 apples and 3 oranges are defective. If a person takes out 2 at random what is the probability that either are apples or both are good ?

A box contains two 50 paise coins, five 25 paise coins and a certain fixed number N(geq2) of 10 and 5-paise coins. Five coins are taken out of the box at random. Find the probability that the total value of these 5 coins is less than 1 rupee and 50 paise.

Consider a sample space "S" representing the adults in a small town who have completed the requirements for a college degree. They have been categorized according to sex and employment as follows: , Employed, Unemployed Male, 460, 40 Female, 140, 260 An employed person is selected at random. Find the probability that the chosen one is a male.