Answer:
3 students will ride in the van that is not full.
Explanation:
There are 246 students going on a field trip to pan for gold.
They are going on vans hold 9 students each.
Total van needed =

=

27 vans for = 27 × 9 = 243 students
1 van for remaining 3 students.
Total 28 van needed, 27 van full and last van will ride with 3 students.