Answer:
1,996
Explanation:
16 students have exactly 1 sibling studying at the same school, so 8 families have 2 children at this school, because
families.
12 students have exactly 2 siblings studying at the same school, so 4 families have 3 children at this school, because
families.
8 students have exactly 3 siblings studying at the same school, so 2 families have 4 children at this school, because
families.
5 students have exactly 4 siblings studying at the same school, so 1 family has 5 children at this school, because
family.
Remaining students =

So, 1,981 families have only one children in this school.
Total number of families:
