To determine if you're eligible to give the CDS (Combined Defence Services) exam in 2027, let's check the age criteria:

Age Criteria for CDS Exam

- For Indian Military Academy (IMA): 19-24 years

- For Indian Naval Academy (INA): 19-24 years

- For Air Force Academy (AFA): 19-24 years

- For Officers' Training Academy (OTA): 19-25 years

Your Age in 2027

- Born in 2003

- Age in 2027: 24 years

Considering the age criteria, you'll be eligible to appear for the CDS exam in 2027 for:

- Indian Military Academy (IMA)

- Indian Naval Academy (INA)

- Air Force Academy (AFA)

However, you'll be at the upper age limit for these academies. For Officers' Training Academy (OTA), you'll still be within the eligible age range.

Please note that these eligibility criteria are subject to change, and you should verify the age limits and other eligibility criteria with the official UPSC website or notification before applying.