1 votes 1 votes 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? Probability iisc probability + – kauray asked Jun 11, 2017 kauray 352 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes I have solved it by trial and error method. Say 4 balls in the bag. 3 balls are red and 1 is black. Now probability without replacement =$\frac{3\times 2}{4\times 3}=\frac{1}{2}$ srestha answered Jun 11, 2017 selected Jun 18, 2017 by kauray srestha comment Share Follow See all 0 reply Please log in or register to add a comment.