Asked by deontay
A bag of marbles holds 4 blue, 5 purple, and 2 yellow marbles. What is the probability of selecting a yellow marble, placing back in the bag, then selecting a purple marble?
Answers
Answered by
deontay
plz like quick
Answered by
mathhelper
Since you are replacing the marble, the second event is independent on the first.
prob(yellow then purple) = (2/11)(5/11) = 10/121
If the first marble was NOT returned, it would be (2/11)(5/10)
prob(yellow then purple) = (2/11)(5/11) = 10/121
If the first marble was NOT returned, it would be (2/11)(5/10)
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