Question

Bag A contains 3 red and 5 black balls, while bag B contains 4 red & 4 black balls. Two balls are transferred at random from bag A to bag B and then a ball is drawn from bag B at random. if the ball drawn from bag B is found to red,find the probability that one red & One black were transferred from bag A to bag B

Answer 1

total no of balls:16
probability of coming red ball: 7/16
probability of coming black ball:9/16