A college class originally had enough students to form eight equal rows. When one student was absent, the students could be seated in five equal rows. When two students were absent, the students could be seated in nine equal rows.

1. A college class has exactly enough students
to form eight equal rows.

2. On Monday a student is absent, and the
professor is able to seat the students into five
equal rows.

3. On Tuesday two students
are absent, and the
professor can seat the
students into nine equal
rows.

4. What is the least possible number of students in the class?