Heres how u work it out. the 1 through 6 are the players and the 3's are the times they played with each person. after u right down the how to do, add all the threas for ur answer

1+2=3

1+3=3

1+4=3

1+5=3

1+6=3

2+3=3

2+4=3

2+5=3

2+6=3

3+4=3

3+5=3

3+6=3

4+5=3

4+6=3

5+6=3

so yes its 45