0 votes 0 votes closed with the note: my doubt is cleared A bag contain 3R and 5 B balls and second bag contain 6R and 4B balls . A ball is drawn from each bag . find the probability that both are (i)red and (2) black.? Mathematical Logic probability + – priti asked Nov 15, 2015 • reshown Nov 15, 2015 by priti priti 387 views comment Share Follow See all 2 Comments See all 2 2 Comments reply priti commented Nov 15, 2015 reply Follow Share According to me 1 and 2 number doesnt specify that first ball is red and second ball is black .Let E be an event of getting a red ballLet F be event of getting a black ballDrawing a ball from one bag may not change the sample space of other bag . so they are independents eventsP(E intersection F) = (3/8)(4/10) + (5/8)*(6/10 )3/8 getting a red ball from first bag4/10 getting a black ball from second bag5/8 getting a red ball from second bag6/10 getting a red ball from second bag is it ryt ? 0 votes 0 votes Anupoju Satish Kumar commented Nov 21, 2015 i edited by Anupoju Satish Kumar Nov 21, 2015 reply Follow Share one ball is drawn from each bag that means there are two balls and the questions if the both balls are red then it becomes 3/8+6/10 because For drawing a red ball from first back the probability becomes 3/8 and from second bag the probability becomes 6/10. Similarly the second case will be. And in the case of second both are black then the probability becomes 5/8+4/10 0 votes 0 votes Please log in or register to add a comment.