In Navy you will be asked maths questions based on your 12th or below level. You will not be adsked tough questions. Few of the type of question and chapter are from time and distance,ratio and proportion, percentage, average, etc. You get questions which will be below 10+2 level. You can refer previous question papers or model question papers to get a view of type of questions.

Hi Atul

The recruitment process for  SSR comprises of following stages:

1. Written Exam
2. Physical Fitness Test
3. Medical Examination
4. Final Selection/ Merit

https://www.joinindiannavy.gov.in/en/page/ssr.html

Click on this link to get the sample papers for NAVY SSR

Hope it helps