I have a simple question for you guys but I am studying for exams and I honestly forgot how this was done.
Here is the problem:
"A vase contains 4 white marbles, 3 red and 2 green. You draw marbles 2 without putting the first one back after the second.
What are the chances that you draw a red marble after the first one was green? What are the chances that you draw 2 white marbles? What are the chances that you draw a white and a red marble?"
"A vase contains 4 white marbles, 3 red and 2 green. You draw marbles 2 without putting the first one back after the second.
What are the chances that you draw a red marble after the first one was green?
What are the chances that you draw 2 white marbles?
What are the chances that you draw a white and a red marble?"
I see I gotta calculate P(A ∩ B) / P(B) but how do I calculate P(A ∩ B) then?
Also the third question from my problem is completely puzzling me even more than the others
I don't have any answers and I have come up with like 100 different answers and I don't even know if any of them are right since I can't compare them to the actual answers and I don't know how to calculate it at all
