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seen Jun 21 '12 at 17:37

Feb
2
awarded  Student
Jun
21
comment A problem in combinatorics
One more question though i multiply $8 \choose 1$ with 3^7? ( $8 \choose 3$ with 3^5 and so on) Thanks a lot
Jun
21
awarded  Scholar
Jun
21
accepted A problem in combinatorics
Jun
21
comment A problem in combinatorics
$ 8 \choose 3$ ways to give 3 subjects to the third student and 3^5 ways to give the remaining 5 to the other three students etc. Note: There are 4 students not 3
Jun
21
asked A problem in combinatorics