Question 7
Est. 2 min
Marks:+3.000.00
A box contains white balls and black balls, while box contains white balls and black balls. One ball is randomly selected from box and transferred to box . After the transfer, one ball is drawn at random from box . What is the probability that the ball drawn from box is black? Enter the answer correct to three decimal places.
Integer answer
Medium Difficulty
03 August 2025