Question

The a. M. Of 80studentds i 42 two of them got 0marks then the mean of the remaining students

Answer 1

• a.m of 80 students is 42. sumof 80students is≈........................... by 80=42.sum of 80 students is 42*80=3360. now,two get 0,so new a.m of 78 students is 3360\78≈ 43.0769230769.