ultmage11234

Ohh so we are using the product rule rather than rule of sum. The crazy numbers throw me off  Thanks!

Hahah i feel like these probablility questions are tricky, but I mean no harm . Why do we have to multiply the combinations? Dont we add them together? Thanks!

Wow! Everyone's contribution and many thoughts that was put into this question is inspiring! This forum has a wonderful community!  

So ultimately is my answer right? Many of you suggest the question to be a combination type of problem.

 1blackball and 2 nonblack b***s + 2blackballs and 1 nonblack ball + 3blackballs and 0 nonblack b***s

(3C1)(6C2)+(3C2)(6C1)+(3C3)(6C0) = 64

THANKS EVERYBODY!!

Yeah for sure, atleast i learned a few thing like distinguishing probalitity problems like these xD

I mightve confused people with the title, it might not necessarily be a premutation question in regards to the problem. My assumption was that it is a premutation question but im not entirely sure. It could be either premutation or combination i guess. Which one does it come closer to? Try to solve it disregarding the title!

So this formula does not work?

nCr

C = combination

n = total number of ojects that you can choose from

r = the number that you need to choose

 1blackball and 2 nonblack b***s + 2blackballs and 1 nonblack ball + 3blackballs and 0 nonblack b***s

(3C1)(6C2)+(3C2)(6C1)+(3C3)(6C0)