380,361 views
12 votes
12 votes
A bag has 1 red marble, 4 orange marbles, 2 green marbles, 6 blue

4
marbles, and 5 black marbles. You randomly pull a marble from the
bag, put it back, and then pull out another one.
What is the probability of not getting a black and then not getting a
green? Write your answer as a fraction.

User Randytan
by
3.0k points

1 Answer

23 votes
23 votes

Explanation:

so first you must calculate the total amount of marbles there are, that being addition : 1+4+2+6+4+5 = 24 in total. now you want to make that into a fraction, 24/24 marbles, once again all together, so the probability of not getting a black marble is 5/24 and probability of not getting a green is 2/24.

User Tim Schmidt
by
3.3k points