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.

Answer

0.09

Explanation

Here,
`P(R)(10)/(100) =0.1, P(F) = (5)/(100) = 0.05`
`P(F nn R) = (3)/(100) = 0.03`
Therefore, the required probability is
`P(R) + P(F) - 2P(F nn R) = 0.1 + 0.05 - 2(0.03) = 0.09`