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Mathematics 16 Online
OpenStudy (anonymous):

in how many ways can 12 people be divided into two groups if one group has 9 people and the other has 3

OpenStudy (shubhamsrg):

how many ways are there to select 9 people out of 12 ?

OpenStudy (anonymous):

i dont know

OpenStudy (anonymous):

12c9 or 12p9?

OpenStudy (dumbcow):

order does not matter here since all you are doing is separating into 2 groups not arranging them 12 choose 9 or 12 choose 3 .... both give same answer

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