Nhi ,
Advance ki eligibility ka sense 10 se hota hain.
If you given your 10 th board in year 2016.
And you not given 12 board in year 2018 than only in 2019 you can give Advance.
You are not eligible for 2020 Advance.

To know more about eligibility follow the link below:https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

If you have any questions remain than comment below.
Good luck...

Joint Entrance Exam Advanced

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