A bag contains 20 coins. If the probability that the bag contains exactly 4 biased coin is 1/3 and that of exactly 5 biased coin is 2/3, then the probability that all the biased coin are sorted out from bag is exactly 10 draws is

An unbiased coin is tossed three times in succession, then the probability of getting exactly one head is

A bag contains 5 red caps and 4 blue caps. The probability that two drawn caps are on same colour is

A bag contains 2 red and 3 white balls and another bag contains 1 red and 2 white balls. If a bag is chosen at random and a ball is drawn from it, what is the probability that the ball is white ?

A fair coin is tossed 10 times. The probability of getting exactly 6 heads is -

A fair coin is tossed a fixed number of times. If the probability of getting exactly 3 heads equals the probablity of getting exactly 5 heads, then the probability of getting exactly one head is-

A bag contains 3 red, 7 white, and 4 black balls. If three balls are drawn from the bag, then find the probability that all of them are of the same color.

A bag contains 5 balls. Two balls are drawn and are found to be white. What is the probability that all the balls are white?

A bag contain n ball out of which some balls are white. If probability that a bag contains exactly i white ball is proportional to i^2 . A ball is drawn at random from the bag and found to be white, then find the probability that bag contains exactly 2 white balls.

An unbiased coin is tossed 3 times in succession, the probability of getting exactly one head is -

If 12 identical balls are to be placed in 3 identical boxes, then the probability that one of the boxes contains exactly 3 balls is :