-5
84 = 9 choose 3 = 9! / 3! / (9-3)!
There are 8!/(4!*4!) = 70 ways.
There are: 10C7 = 120
-5
72
-5
-5
5 for 2, 3 for 3, 2 for 4.
it has 20 people in the standing committee not how many people how many committees
Nine people can be selected from the group in(12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4) = 79,833,600ways.But each group of the same 9 people can be selected in(9 x 8 x 7 x 6 x 5 x 4 x 3 x 2) = 362,880 different orders.So the number of different 9-person committees that can be selected is79,833,600/362,880 = 220 .
There are 16C6 = 16*15*14*13*12*11/(6*5*4*3*2*1) possible committees. That is, 8,008 of them.
84 = 9 choose 3 = 9! / 3! / (9-3)!
the answer is 3 because 3 6's go into 18
120
A 9 person jury, final 3
There is no set number. It could be none at all.