In a certain population, 10% of the people are rich, 5% are famous, and 3% are rich and famous. Then find the probability that a person picked at random from the population is either famous or rich but not both.

In a certain town, 40% of the people have brown hair, 25% have brown eyes, and 15% have both brown hair and brown eyes. If a person selected at random from the town has brown hair, the probability that he also has brown eyes is 1//5 b. 3//8 c. 1//3 d. 2//3

In a group of 20 males and 5 females, 10 males and 3 females are service holders. What is the probability that a person selected at random from the group, is a service holder, given that the selected person is a male ?

5% of the electric values are defective. 10 values are drawn at random. Find the probability that at least two defective values are found.

In a group of 20 males and 5 females, 10 males and 3 females ae service holders, What is the probability that a persons selected at random from the group, is a service holder, given that the selected person is a male?

5% of the electric valves are defective. 10 valves are drawn at random. Find the probability that at least two defective valves are found.

In a city 20% of the population travels by car, 50% by bus and 10% travels by both car and bus. Then persons travelling by car or bus is-

The records of a hospital show that 10% of the cases of a certain disease are fatal. If 6 patients are suffering from the disease, then the probability that only three will die is

A bag contains 12 red and 10 white balls. 5 balls are taken from the bag at random. Find the probability that 3 balls are red and 2 balls are white.

It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?

A car manufacturing factory has two plants X and Y. Plant X manufactures 70% of the cars and plant Y manufactures 30% . At plant X, 80% of the cars are rated of standard quality and at plant Y, 90% are rated of standard quality. A car is picked up at random and is found to be of standard quality. Find the probability that it has come from plant X.