10 There are 3 seeded players among the athletes. Now this 10 athlete is divided into two groups, A and B, with 5 people in each group. Try to find the following events.
1.There are exactly two seeded players in Group A. ..
C(3，2)/(2*2*2) =3/8
2.3 Seed players in the same group.
2/(2*2*2) = 1/4
I wish you progress in your studies and go up a storey still higher! (*^__^*)