Hello,

According to the eligibility criteria for NDA, a candidate should be between the age of 16.5 to 19.5 while applying for admission. In your case, after clearing 10+2 you will be 17 years Old in 2023.

There is no limit in number of attempts, you can attempt for NDA till you lie in that age limit i.e. till 19.5 years.

Other eligibility criteria for NDA is

• The candidate must be an indian national
• Male unmarried candidates are eligible.
• Age lies between 16.5-19.5
• Minimum qualification 10+2 for army and 10+2 with physics and mathematics for air force and navy.

For more information regarding NDA please visit https://www.google.com/amp/s/competition.careers360.com/articles/nda-eligibility-criteria/amp

All the best!