1 1 vote Probability probability conditional-probability engineering-mathematics + – cocgame 3.6k views answer comment Share Follow Print See all 5 Comments 5 5 Comments reply Show 2 previous comments Pinaki Dash commented Feb 16, 2018 reply Follow flag I am getting 0.78. 0 0 replyShare Kaifi7 commented Feb 16, 2018 reply Follow flag What's your appraoch? 0 0 replyShare Pinaki Dash commented Feb 16, 2018 reply Follow flag I have added it as an answer, please check it. 0 0 replyShare Please log in or register to add a comment.
2 2 votes Please correct me if I'm wrong. Pinaki Dash answered Feb 16, 2018 Pinaki Dash comment Share Follow See all 2 Comments 2 2 Comments reply cocgame commented Feb 17, 2018 reply Follow flag Great answer,, seems correct 0 0 replyShare arun yadav commented Sep 16, 2020 reply Follow flag why ordering is considered in these question eg: (1) first black ,second red and (2) first red , second black and (3)both are black why are we are considering 1 and 2 case separately?? 0 0 replyShare Please log in or register to add a comment.
0 0 votes Probability that at least at least one black ball is picked in the first two pickings = $1- (75/100 \times 75/100) = 0.44 $ Probability that at least one black ball with a red dot is picked in the first two pickings = $ 1- (95/100 \times 95/100) = 0.09 $ The probability that no black ball with a red dot is picked given that at least one black ball is picked is $(1 -2)/1 = 0.35/ 0.44 = 0.79 $ Joey answered Jan 7, 2021 Joey comment Share Follow 0 reply Please log in or register to add a comment.
