In counting m coloured balls, some blue and some white, it was found that 49 of the first secounted were blue. Thereafter 7. out of every 8 counted were blue. If, in all, 90% or more of the balls counted were blue, the maximum value of m is

A bag contains 50 balls. Some of them are white, some are blue and some are red. The number of white balls is 11 times the number of blue balls. The number of red balls is less than the number of white balls but more than the number of blue balls.If one ball is taken out of random from the bag, what is the probability that it is red?

A bag contains in all 80 balls. Some of them are white, some are blue and some are red. The number of white balls is 12 times the number of blue balls. The number of red balls is less than the number of white balls but more than the number of blue balls. If one ball is selected at random from the bag, what is the probability that it is red ?

Total number of ways of selecting 10 balls out of unlimited number of white,red,blue and green balls given that balls of each colour are identical,is 11P then value of P is

A bag contains 2 red,3 green and 2 blue balls. Two balls are drawn at random.What is the probability meat one of the balls drawn is green and the other is blue? b.Count is probability that none of the balls drawn is Red.

A bag contains 3 red balls, 5 white balls and 8 blue balls. One ball is taken out of the baf at random. fine the probability that the ball taken out is (a) a red ball, (b) not a white ball.

Ajay ordered 4 pairs of black socks and some additional pairs of blue socks. The price of the black socks per pair was twice that of the blue ones. When the order was filled, it was found that the number of pairs of the two colours had been interchanged. This increased the bill by 50%. Find the ratio of the number of pairs of black socks to the number of pairs of blue socks in the original order.

A box contains some green and blue balls. 7 red balls are put into it. Now the probability of getting a red ball from the box is 7/24 and that of a blue ball is 1/6 . How many of them are blue?