1.- 10 assigments / 1 homework pass 10:1
2.- 1 homework pass = 10 assigments 1:10
3.- 20 assigments / 2 homework passes 20:2
4.- 60 assigments / 3 homework passes 60:3
5.- 80:4
6.- 100:5
4.6m questions
5.9m answers