It primarily depends on the course that you are pursuing (BA, BSC, BCA, BCOM, etc). IGNOU prioritizes quality over quantity. As a result, it is best to write as much as possible in a direct and concise manner. A4 sheets are preferred.

It is recommended to write half a page for a 5-mark answer.

Write the answer in full page for 10 points

2 pages for a 20-mark question (front & back)

For a 25-point question, two or two and a half would suffice.

This is how the answer writing pattern is divided which would fetch you marks if you have written on point.