Five marbles are drawn from a bag which contains 7 blue marbles and 4 black marbles. What is the probability that:  (i)all will be blue? (ii)3 will be blue and 2 black?

Five marbles are drawn from a bag which contains 7 blue marbles and 4 black marbles. What is the probability that: (i)all will be blue? (ii)3will be blue and 2 black?

Five marbles are drawn from a bag which contains 7 blue marbles and 4 black marbles. What is the probability that (i) all will blue? (ii) 3 will be blue and 2 black?

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(i)all will be blue

A bag contains 3 red and 2 blue marbles. A marble is drawn at random. What is the probability of drawing a blue marble?

A bag contains 3 red and 2 blue marbles. A marble is drawn at random. What is the probability of drawing a blue marble?

A bag contains 3 red and 2 blue marbles. A marble is drawn at random. What is the probability of drawing a blue marble ?

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 (i) all will be blue? (ii) atleast one will be green?

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 (i) all will be blue? (ii) atleast one will be green?

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 (i) all will be blue? (ii) atleast one will be green?