Question

The probability of drawing two white balls from a jar at random without replacement is 1/5 The probability of drawing a white ball first is 7/15 . What is the probability of drawing a second white ball, given that the first ball drawn was white?

Answer 1

3/7

Explanation:

just took the test

Answer 2

The odds of drawing the second white ball are 3/7.

We can determine this by using the fact that the overall odds are the odds of each individual pull multiplied time each other. Therefore we know, the first time (7/15) multiplied by the second time (x) equals the finals odds (1/5)

7/15 * x = 1/5 ----> multiply both sides by 15/7

x = 3/7