Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that both balls are red

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that the first ball is a black and the second is red

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that one of them is black and the other red

Two balls are drawn at random with replacement from a box containing 10 black and 8 red balls. Find the probability that one of them is black and the other is red.

Two balls are drawn with replacement from a box containing 10 black and 8 red balls. Find the probability that one of them is black and the other is red.

A bag contains 5 white and 3 black balls. Two balls are drawn at random one after the other without replacement. Find the probability that both balls drawn from the bag are black.

A bag contains 4 red and 4 black balls . Another bag contains 2red and 5 black balls. One of the two bags is selected at random and a ball is drawn from the bag and which is found to be red . Find the probability that the ball is drawn from first bag.

A bag contains 5 white balls and 3 black balls. Two balls are drawn at random one after the other without replacement. Find the probability that the ball drawn first is white.