UPSC CDS 1 2020 Math Paper

Question : 31 of 100

Marks: +1, -0

Students of a class are made to sit in rows of equal number of chairs. If number of students is increased by 2 in each row, then the number of rows decreases by 3. If number of students is increased by 4 in each row, then the number of rows decreases by 5. What is the number of students in the class ?