Phil has 7 green marbles and 3 purple marbles in a bag. he removes a marble at random, records the color, puts it back, and then
repeats this process until he has withdrawn 6 marbles. what is the probability that exactly three of the marbles that he removes are green? express your answer as a decimal rounded to the nearest thousandth.
Yes for the first one, yes for the second one, and yes for the third one although your subtraction equation had the wrong year (its not 1847 its 1846) but the answer was right, 65.
