A bag contains 4 balls. Two balls are drawn at random, and are found to be white. What is the probability that all balls are white?

A bag contains 5 balls.Two balls are drawn and are found to be white.What is the probability that all the balls are white?

A bag contains 6 white and 4 black balls.Two balls are drawn at random and one is found to be white.The probability that the other ball is also white is

An urn contains 4 balls.Two balls are drawn at random from the urn (without replacement) and are found to be white.What is the probability that all the four balls in the urn are white?

A bag contains 5 white and 7 red balls. One ball is drawn at random. What is the probability that ball drawn is white?

A bag contains 6 black, 6 red and 8 white balls. Two balls are drawn at random. What is the probability that atleast one of the balls drawn is white?

A bag contains 3 white and 2 red balls. One ball is drawn at random. What is the probability that the ball drawn is red?

A bag contains 3 red, 6 white and 7 blue balls. Two balls are drawn one by one. What is the probability that first ball is white and second ball is blue when first drawn ball is not replaced in the bag?