In a bag there are 6 balls of which 3 are white and 3 are black. They are drwn successively with replacement. What is the chance that the colours are alternate ?

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 4 black balls. Four balls are drawn with replacement. What is the probability that they are alternately of different colours?

A bag contains 10 white and 15 black balls. Two balls are drawn in succession without replacement. What is the probability that first is white and second is black?

A bag contains 4 white , 7black and 5 red balls. 4 balls are drawn with replacement. What is probability that at least two are white?

A bag contains 3 white, 4 red and 5 black balls. Two balls are drawn one after the other, without replacement. What is the probability that one is white and the other is black?

A bag contains 5 white, 7 red and 8 black balls. Four balls are drawn one by one with replacement, what is the probability that at least one is white?

A bag contains 5 white, 7 red and 4 black balls. If four balls are drawn one by one with replacement, what is the probability that none is white?

A bag contains 5 while, 7 red and 4 black balls. If four balls are drawn one by one with replacement, what is the probability that none is white ?

Two balls are drawn from an urn containing 2 white , 3 red and 4 black balls , one by one without replacement . What is the probability that both balls are of the same colour ,