An urn contains 5 blue and an unknown number x of red balls.Two balls are drawn at random. If the probability of both of them being blue is 5/14 find x.

An urn contains 5 blue and unknown number x of red balls. Two balls are drawn at random. If the probability of both of them being blue is 5/14 , then x is

An urn contains 6 black and an unknown number of x of yellow balls. When two balls are drawn at random, the probability of both being black is 5// 26 . Find x.

An urn contains 7 white, 5 black and 3 red balls. Two balls are drawn at random, Find the probability that : both the balls are red.

An urn contains 7 white, 5 black and 3 red balls. Two balls are drawn at random, Find the probability that : one ball is white.

An urn contains 10 balls, 4 red and 6 blue balls. A second urn contains 16 red balls and unknown number of blue balls. A ball is drawn from each urn. If the probability that both balls are of the same colour is 0.44, then the number of blue balls in the second urn is (A) 4 (B) 6 (C) 8 (D) 2

An urn contains 8 red and 5 white balls. Three balls are drawn at random. Then the probability that balls of both colours are drawn is-

An urn contains 8 red and 5 white balls. Three balls are drawn at random. Then, the probability that balls of both colors are drawn is: