A bag contains 3 blue marbles, 9 green marbles, and 11 yellow marbles. Twice you draw a marble and replace it. Find P(blue, then green)

a) 27/529
b) 27/23
c) 15/529
d) 12/23

Question

A bag contains 3 blue marbles, 9 green marbles, and 11 yellow marbles. Twice you draw a marble and replace it. Find P(blue, then green)

a) 27/529
b) 27/23
c) 15/529
d) 12/23

anonymous · Answer

D. 12/23

anonymous · Answer

The answer is not D!

anonymous · Answer

And stop just giving answer. Read the Code of Conduct.

anonymous · Answer

renabanans,
on the first draw you want a blue
3 of the 23 marbles are blue so that probability is 3/23
You then PUT IT BACK so
for the second draw 9 of the 23 marbles are green
that probability is 9/23
The draws are independent.
So multiply your 2 probabilities for the CORRECT answer.