**Home > Quantitative Aptitude > Probability > Probability of Balls**

1. A bag contains 3 red balls and 8 black balls and another bag contains 5 red balls and 7 black balls, one ball is drawn at random from either of the bag, Find the probability that the ball is red?

2. A bag contains 3 red balls and 8 black balls and another bag contains 5 red balls and 7 black balls, one ball is drawn at random from either of the bag, Find the probability that the ball is red?

3. A bag contains 8 blue and 7 green balls. 2 balls are drawn one by one without replacement. What is the probability that the balls are alternately of different colors?

4. There are 4 black balls and 6 white balls. 2 balls are drawn one by one without replacement. What is the probability that the balls are same in colour?

5. A bag contains 3 red, 4 green and 3 yellow balls. if 2 balls are drawn at random. What is the probability that they are of different color?