A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?

A box has five pairs of socks. Two pairs are white and the other three are black. One black sock is taken out. Later , another sock is drawn from the bag. What is the probability that it will be a black sock?

A box has three paris of socks. One pair is white and the other two are of blue colour. One white sock is taken out. Later another sock is drawn from the bag without looking at the colour. What is the probability that it will be blue in colour?

A bag contains 4 black and 3 white balls. If two balls are drawn at random without replacement, what is the probability that both balls have each color?

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 box contains 3 white and 2 black balls. Two balls are drawn at random one after the other. If the balls are not replaced. what is the probability that both the balls are 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?

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?

A bag contains twelve pairs of socks and four socks are picked up at random. The probability that there is at least one pair is equal to -

A bag A contains 3 white and 2 black balls and another bag B contains 2 white and 4 black balls. A bag and a ball out of it are picked at random. What is the probability that the ball is white?