A bowl contains 8 blue marbles and 5 green marbles. Hannah randomly draws 4 marbles from the bowl. She does not replace the marbles after each draw. What is the probability that she draws 2 blue marbles and 2 green marbles?

Question

xguardians · Answer

1) Add the total amount together 8 + 5 = 13

Probability of grabbing a blue 8/13 (First Time)
Probability of grabbing blue 7/12 (Second Time)
Probability of grabbing green 5/11 (First Time)
Probability of grabbing green 4/10 (Second Time)

Multiply all these together.Then you must multiply these again (not exactly sure by what) since its a combination (order doesn't matter) and not a permutation. Hopefully this gets you started.