The probability of selecting a red ball at random from a jar that contains only red, blue and orange balls is `(1)/(4)` The probability of selecting a blue ball at random from the same jar is `(1)/(3)` If the jar contains 10 orange balls, find the total number of balls in the jar.

The probability of selecting a red ball at random from a jar that contains only red, blue and orange balls is 1/4 . The probability of selecting a blue ball at random from the same jar is 1/3 . If the jar contains 10 orange balls, find the total number in the jar.

The probability of selecting a green marble at random from a jar that contains only green, white and yellow marbles is 1/4. The probability of selecting a white marble at random from the same jar is 1/3. If this jar contains 10 yellow marbles.What is the total number of marbles in the jar?

The probability of selecting a green marble at random from a jar that contains green,white and yellow marble is 1/3. The probability of selecting a white marble random from the jar is 2/9. If the jar contains 8 yellow marbles,find the total numbers of marbles in the jar

Two balls are selected from a box containing 2 blue and 7 red balls.What is the probability that at least one ball is blue?

A bag constains white, black and red ball only. A ball is draw at random form the bage. If the probability of getting a white balls is (3)/(10) and that of a black ball is (2)/(5) then find the probability of getting a red ball. If the bag contains 20 black balls, find the total number of balls in the bag.

Two balls are drawn at random from a bag containing 6 red and 4 green balls, find the probability that both ball are of same colour.

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

A jar contains 54 marbles each of which is blue,green or white.The probability of selecting a blue marble at random from the jar is (1)/(3), and the probability of selecting a green marble at random is (4)/(9). How many white marbles does the jar contain?

A bag contains 3 red, balls, 4 bule balls and 5 green balls .What is the probability that a ball picked up at random is not a blue ball ?