There are four colored balls in a hat: two red, one black and one blue. After pulling out two of them, you know that one of them is red, but you do not know which one. What is the probability that both balls are red?
PROBABALITY OF BOTH BALLS ARE RED ARE (2 / 4) * (2 /4) =( 1/ 2) * ( 1/2) =1/4
A bag contains Red Balls and Black Balls. Two balls are drawn without replacement. The probability that both the balls drawn are red is 1/2. What is the minimum number of Red and Black Balls for which this probability is satisfied?
A bag contains 5 white, 4 red and 3 black balls. A ball is drawn at random from the bag, what is the probability that it is not black?
A box contains 4 red balls, 6 green and 8 black balls. Three balls are drawn at random find the probability that three balls are of different color?
There are two bags. First contains 7 red and 5 violet balls whereas second contains 7 violet and 5 red balls. A ball is drawn at random from both the bags. What is the probability of both balls having same colour?
