A bag contains 2red marbles 4 green marbles 1 lavender marble 4 yellow marbles and 4 orange marbles . How many sets of four marbles include all the red ones ?

Question

dan815 · Answer

both the red marble are included in the set of 4, that leaves 2 places for the rest of the marbles, you need to see how many different combinations can fill up the rest of the 2 places

dan815 · Answer

other than the 2 red u have,
4-Green
1-Lavender
4-Yellow
4-Orange

dan815 · Answer

u can have the rest of the 2 spaces filled like this
GG   YY    OO
GL   YL     OL
GY   YO
GO

dan815 · Answer

thats a total of 9

dan815 · Answer

now u need to know how many total sets exist

anonymous · Answer

So woul n be nine c two

dan815 · Answer

sorry no

dan815 · Answer

where is 9 C 2 coming from

anonymous · Answer

9 combination 2

dan815 · Answer

okay but why are you using that

anonymous · Answer

2 red 2 whatever color left other than red and 9 other combos besides the two reds

anonymous · Answer

Or s1:(2,2)  s2:(9,1) 9*2=18

dan815 · Answer

actually i guess we are done... 
they only want the number of sets they dont want probability or anything

dan815 · Answer

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