A bag contains 5 red balls and some blue balls, If the probability of drawing a blue ball is double that of a red ball, Find the number of blue balls in the bag.

A bag contains 6 yellow balls and some green balls. The probability of getting a green ball is triple that of a yellow ball. Determine number of Green balls in the bag and find the probability of each colour ball when a ball is drawn at time randomly.

From a bag containing 6 red balls, 5 green balls and 3 blue balls, the probability of getting a green ball at random………

A box contains 4 red balls, 5 green balls and P white balls. If the probability of randomly picked ball from the box to be a red ball is 1/3 , then find the number of white balls.

A bag contains 4 red, 5 black and 6 blue balls. Find the probability that two balls drawn at random simultaneously from the bag are a red and a black ball.

A bag contains 5 red balls and 7 black balls a ball drawn at random from the bag. What is the probability that the ball selected red .

A bag contains 5 red balls and 7 black balls a ball drawn at random from the bag. What is the probability that the ball selected not red.

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is red?

A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is not red?