What would be the tree diagram for this probability question: A Yellow ball, a red ball, a white ball and a black ball are placed in a barrel. 2 Balls are chosen at random.
WILL MEDAL!!!

Question

What would be the tree diagram for this probability question: A Yellow ball, a red ball, a white ball and a black ball are placed in a barrel. 2 Balls are chosen at random. 
WILL MEDAL!!!

anonymous · Answer

The first part of the tree diagram represents the first choice of ball, and the parts that branch off that represent the second choice of ball. Note that when you choose the first ball, you cannot choose it again (no replacement).

anonymous · Answer

So, it doesn't make a difference in the look of the tree diagram if the balls are being pulled out one at a time or both together??

anonymous · Answer

@JE90

anonymous · Answer

If you pull out two balls at the same time you can treat it as if you pulled one out first and then then other, so the tree diagram is no different.

anonymous · Answer

Ok. I think that was what was confusing me. I had other questions which balls were pulled out at the same time and I wasn't sure if it was different or not. Thanks for your help!! :)

anonymous · Answer

No problem! :)