Hello candidate,

here are the details regarding the age eligibility criteria and number of attempts regarding the nda examination-

1. The candidates who have cleared Class 12 level or its equivalent, and are in the age group of 16-and-a-half and 19 years are eligible to apply under the current eligibility criteria.

2. There is no specific limit on the the number of attempts a candidate can give in order to qualify the examination.

Hope you found it helpful. If you have any further queries feel free to post it here!!