Question

1
Bag-I contains 3 red and 4 black balls and Bag-II
contains 4 red and 5 black balls. One ball is trans-
ferred from Bag-I to Bag-II and then a ball is drawn
from Bag-II. The ball so drawn is found to be red
in colour. Find the probability that the transferred
ball is black. ​

Answer 1

Step-by-step explanation:

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