A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if
they can be of any colour.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if they can be of any colour.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if they must all be the same colour.

A bag contains 6 white marbles and 5 red marbles. Find the number of ways in which four marbles can be drawn form the bag if 2 must be white and 2 red.

A bag contains 5 black and 6 red balls. Determine the number of ways in which 2 black and 3 red balls can be selected.

A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn from the box, what is the probability that all will be blue

A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn from the box, what is the probability that at least one will be green

A bag contains 5 red marbles and 3 black marbles. Three marbles are drawn one by one without replacement. What is the probability that at least one of three marbles drawn be black if the first marble is red?

A box contains 10 red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn from the box, what isthe probability that (i) all will be blue? (ii) atleast one will be green?

A box contains 5 red marbles.8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probability that the marble taken out will be (i)red? (ii) white? (iii)not green?

A box contains 5 red marbles, 8 white marbles and 4 green marbles. One marble is taken out of the box at random. What is the probabililty that the marble taken out will be : white ?