A box contains 7 white and 5 black balls. If 3 balls are drawn simultaneously at random with out replacement, what is the probability that they are not all of the same colour ?

A bag contains 7 white and 5 black balls.If 3 balls are drawn simultaneously at random, what is the probability that they are not all of the same colour Calculate the probability of the same event for the case where the balls are drawn in succession with replacement between drawings.

A bag contains 5 white, 7 red and 8 black balls. If four balls are drawn one by one without replacement, what is the probability that all are white?

A box contains 5 white, 7 red and 8 black balls. If four balls are drawn by one with replacement what is the probability that All are white?

A box contains 5 white, 7 red and 8 black balls. If four balls are drawn by one with replacement what is the probability that None is white?

A bag contains 7 red, 4 white and 5 black balls. If four balls are drawn one by one the replacement, what is the probability that all are white?

A bag contains 5 white and 3 black balls. Four balls are successively drawn out without replacement. What is the probability that they are alternately of different colours?

A bag contains 5 white and 3 black balls. Four balls are successively drawn out without replacement. What is the probability that they are alternately of different colours?

A bag contains 5 white and 3 black balls. Four balls are successively drawn out without replacement. What is the probability that they are alternately of different colours?

A bag contains 5 white and 3 black balls.Four balls are successively drawn out without replacement.What is the probability that they are alternately of different colours?