A jar contains black and white marbles. If there are ten marbles in the jar, then which of the following could not be the ratio of black to white marbles? `1:4` b. `1: 10` c. `7:3` d. `9:1` e. none of these

Exactly 52% of the marbles in a jar are red. Which of the following could be the total number of marbles in the jar?

A bag contains 3 black marbles, 5 red marbles and 6 white marbles. If a marble is picked at random, then what is the probability that it is not a white marble?

A drum contains 3 to 5 jars each of which contains 30 to 40 marbles. If 10 percent of the marbles are flawed, which of the folllowing cannot be the number of flawed marbles?

In a box, the ratio of red marbles to blue marbles is 7:4. Which of the following could be the total number of marbles in the box?

A jar contains only red marbles and white marbles. If the probability of selecting a red marble is (r)/(y) , which of the following expressions gives the probability of selecting a white marble, in terms of r and y?

A jar contains only red marbles and white marbles, If the probability of selecting a red marble is r/y , which of the following expressions gives the probability of selecting a white marble , in terms of r and y?

A box contains 3 blue, 2 white and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it will not be a white marble?

A bag contains 2 white marbles, 4 blue marbles and 6 red marbles. Three marbles are drawn from the bag . What is the probability that none is black ?

A box contains 3 blue, 2 white and 4 red Marbles. If a marble is drawn at random from the box then what is the probability that it will be : white