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 at least one ball is red?

Two balls drawn from an urn containing 2 white,3 red and 4 black balls one by one without replacement.What is the probability that at least one ball is red?

An urn contains 3 white, 4 red and 5 black balls. Two balls re drawn one by one without replacement. What is the probability that at least one ball is black?

An urn contains 3 white,4 red and 5 black balls.Two balls are drawn one by one without replacement.What is the probability that at least one ball is black?

Two balls are drawn at random from a bag containing 2 white,3 red,5 green and 4 black balls,one by one without,replacement.Find the probability that both the balls are of different colours.

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; 7red 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 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 white,7 red and 3 black balls.If three balls are drawn one by one without replacement,find the probability that none is red.

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