Amy has a box containing 6 white, 4 red, and 8 black marbles. She picks a marble randomly. It is red. The second time, she picks a white marble. In the third attempt, Amy picks a white marble again. Amy has not replaced the marbles she picked.
not really sure what the question is but if your question is but if ur question is asking what the possiblity is, the answer should be a possiblity of 8/15 for picking a black marble. If Amy picks a black marble in the fourth attempt, the probability of the fifth attempt she will pick a red or a black marble is 5/7
