There is no need to worry about tatoo for being eligible for Indian administrative services examination. This is because the Examination authority union Public Service Commission has not made any criteria related to tattoo for giving examination of Indian administrative Services.

The most basic eligibility criteria which you need to satisfy is to complete your graduation or post graduation from a recognised University for being eligible for giving Indian administrative services examination. There is also no restriction of how much marks you are getting in your graduation. The only thing you need is to just complete your graduation by passing it.

Read more about Indian administrative Services by clicking on mentioned below link:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://competition.careers360.com/exams/upsc-civil-services-exam/amp&ved=2ahUKEwiu98f6_oz1AhXIzDgGHWQPD-EQFnoECAQQAQ&usg=AOvVaw0YgHjPSGbCBqWgNlDAT28h