Hello

All the questions asked in Army examination of mathematics are from 10th based or below it. All the questions are practical questions that one faces in day to day life.

You can look for it in YouTube as there were many exams held every year for Indian Army or you could look to website which are specially made for defense preparation candidates. If you can tell the exam name than I can refer you where you can get the questions.

Hope the answer helps you!

All the best!