3 out of 4, 13 out of 16 and 5 out of 6, 11 out of 12, 15 out of 16 and 17 out of 18 in each group

3 out of 4, 13 out of 16 and 5 out of 6, 11 out of 12, 15 out of 16 and 17 out of 18 in each group

3/4