There are m red balls and n white balls in an urn. We draw two balls...

 

Transcribed Image Text:

There are m red balls and n white balls in an urn. We draw two balls simultaneously and at random. What is the probability that the balls are of different colour? There are m red balls and n white balls in an urn. We draw two balls simultaneously and at random. What is the probability that the balls are of different colour?