Suppose 5 men out of 100 and 25 women out of 1000 are god orators. An orator is chosen at random. Find the probability that a male person is selected. Assume that there are equal number of men and women.

Suppose 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 these 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.

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

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.

In a group there are 2 men and 3 women ,3 persons are selected at random from the group . Find the probability that 1 man and 2 women or 2 men and 1 women are selected .

Three men (out of 7) and 3 women (out of 6) will be chosen to serve on a committee. In how many ways can the committee be formed?

In a class of 25 students with roll numbers 1 to 25 , a students is pecked up at random to answer a question .Find students with roll numbers 1 to 25 , a student is picked up at random to answer a question . Find the probability that roll number of the selected students is either a multiple of 5 or 7.

Cards marked with numbers 5 to 50 Cards marked with numbers 5 to 50 are placed in a box and mixed thoroughly, A card is drawn from the box at random. Find the probability that the number on the card taken out is (i) prime number less than 10 (ii) a number which is a perfect square

In a group there are 3 women and 3 men . 4 people are selected at random from this group . Find the probability that 3 women and 1 man or 1 women and 3 men are selected .