The full score in the math exam is 100, and the average score of 40 students in the class is 8 1.5. If the scores of ABC students are excluded. The rest of the students scored an average of 80 points. Did you get a B? 100 integral.

The total score of 40 students is 8 1.5*4=3260.

Excluding three students, the total score is 80*37=2960.

The total score of those three students is 3260-2960=300.

Average score of three people 100.

No one can be higher than 100.

So a, b and c are all 100 points.