Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Number | Song Title | Lyricist | Singer(s) | Length |
| --- | --- | --- | --- | --- |
| 1.0 | Tu | Dev Kohli/Biddu/ Sonu Nigam | Sonu Nigam | 4:26 |
| 2.0 | A.B.C. | Dev Kohli | Sonu Nigam | 4:10 |
| 3.0 | Pyaar Ki Kasam | Dev Kohli | Sonu Nigam | 4:53 |
| 4.0 | Bus Stop | Timon Singh/Biddu | Sonu Nigam | 5:10 |
| 5.0 | O Sudha | Dev Kohli/Biddu | Sonu Nigam | 4:33 |
| 6.0 | Ma Ke Jaisi | Dev Kohli | Sonu Nigam | 4:46 |
| 7.0 | De Diya Dil | Dev Kohli | Sonu Nigam , Swati Natekar | 4:45 |
| 8.0 | Kismat | Dev Kohli/Biddu | Sonu Nigam | 4:52 |
| 9.0 | O Sudha (Extended Rap Mix) | Dev Kohli/Biddu | Sonu Nigam | 5:10 |
Question:
What is the average number for the song "O Sudha"?
Answer:
5.0