1. Score of Chen, David, and Eric respectively after Round 3 =3, 3,3

2. option 1

3. option 1

4. option 1

Team playing in different round can be tabulated as given below:

NP : Not played in that round

**Explanation**:

Now as B had scored 2 points till round 6 and he had played only in round 1 and in round 2 till that thus he must have scored 1 – 1 points in each round.

So A can score 1 in round 6 and 7 in round 1 as he had played only in two rounds and had 8 points.

Similarly, Joshin (J) must have scored 7 points each in round 5 and round 6.

Now from the information known about Rounds 7 through 10: from point 1 and 2, C must score 1 points each in round 8, 9 and 10 as hi points has been increased 3 (from 3 to 6) and J must score 3 points in round 7.

Now the only possibility for I is to score 1, 7 and 7 points in round 7, 8 and 9 respectively.

Now A can not score in two consecutive rounds and his points has been increased from 8 to 18 so it is the only possibility that he score 7 points in round 7 and 3 points in round 10. Thus B will score 3 points in round 9 and H in round 8.

Now if we fill these data in the table, the following table can be made

Now all the question can be answered: