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I thought there should be 33 in the space but its wrong

there are no red balls in this problem

?? Let me re-do. This was my problem, I've had this before.

ok

I did this awhile ago, mine was just with red instead of white, so I'm not sure.

|dw:1441343388675:dw|

so there are 6?

nono so w can be drawn either 1s 2nd 3rd... or 6th

for each of these 6 cases u can have different combinations of balls before

right so how do i find out how many outcomes there are

I don't know ;(

lets say for w showing up on the 4th try
_ _ _ W
that means
we have 3 places for ,2 red and 3 green

no red just yellow

that means we either have 3 green,2, green or 1 green in there

true

|dw:1441344028052:dw|

just 3 possiblites

but i dont wanna count like this, theres gonna be a permutation adn combination way of getting 3

we have 3 spots, 3 Green,2 Yellow* to fill those 3 spots

ok

hmmm

would it be 35?

how did u get that

well I originally made a tree chart and came up with 33

hmmm

|dw:1441344262286:dw|

ugh thats too annoying

Ik, is there a faster way to do it?

thats what im trying to think about

I think i missed a W on my chart so I think it 34

Got it :D