In a bag there are a certain number of blue balls and white balls. The probability of picking up exactly 1 white ball when 2 balls are randomly drawn, is 1/2. Which of the following is the ratio of the number of blue balls to white balls in the bag
Pick one: A) 1:1 B) 1:2 C) 1:5 D) 1:4 E) 1:6
since the probability of drawing a white ball out of two picks is 1/2.   the ratio of the white ball to blue balls should be 1:1   1:1nswer : 1:1
<result>A</result>
In a bag there are a certain number of blue balls and white balls. The probability of picking up exactly 1 white ball when 2 balls are randomly drawn, is 1/2. Which of the following is the ratio of the number of blue balls to white balls in the bag