Dear aspirant hope you are doing well.

To join indian army. If you are good in maths at 8th level, you can qualify the examination of army which is not tough.. Most of the army aspirant easily qualify the written exam.

The main thing where most of the candidate are not able to join is physical health.

Age is aslo a big factor..

You have to complete  1.6km in 5.5 minutes among 300 candidate . Which the difficult for most of the candidate who participated in the race / rally.

Written exam is so easy level, every one qualify for the exam after the physical exam.

Hope it's helpful

Thank you