If you are in 12th grade and have failed in additional maths but passed other subjects, you can still apply for Army Nursing Assistant. For this post, you need to have passed 12th with Science subjects like Physics, Chemistry, and Biology. Mathematics is usually not required.

You must also meet the age limit, which is generally between 17.5  to 23 years, and pass the medical and physical fitness standards of the Indian Army. Since you have passed the required subjects, you are eligible to prepare for Army Nursing Assistant.

Official website:

https://www.joinindianarmy.nic.in/Authentication.aspx