Question

An urn contains 9 balls, two of which are red, three blue and four black. three balls are drawn from the urn at random, that is every ball has an equal chance of being included in the three. what is the chance that (i) three balls are of different colours? (ii) two balls are of the same colour and third of different? (iii) the balls are of the same colour?

Answer 1

All have probability like may be sometimes it can come three colours same or two may be same and third different and even sometimes all may be different