Urn 1 contains 5 white and 6 black balls, while urn 2 contains 8 white and 10 black balls. Two balls arerandomly selected from urn 1 and are placed into urn 2. If 3 balls are randomly selected from urn 2,compute the expected number of white balls selected from urn 2.Hint : LetAibe the event that theith white ball is selected from urn 1 and placed into urn 2 andthen selected from urn 2. LetBjbe the event that thejth white ball from urn 2 is selected. Define theindicator variables