I am born on 3rd November,2010. Can I appear for nda 2 ,2029 as i will be 18 years and 10 months old at that time

The eligibility isn't calculated on the exam date — it's calculated as on the age-cutoff date UPSC sets for course commencement, which is 1st July of the following year for NDA II. That's why your own math (18 years 10 months) doesn't line up with how UPSC actually calculates it.

Here's the real picture for NDA II 2029 :

• Cutoff date for age calculation: 1 July 2030
• Required DOB range: 2 January 2011 to 1 January 2014
• Your DOB: 3 November 2010

Since your birth date falls before 2 January 2011, you'd be just about 2 months too old for NDA II 2029 — not too young.

The good news: You are eligible for NDA I 2029 instead, since that window is 2 July 2010 to 1 July 2013 — your birth date fits comfortably in the middle of that range.

Bottom line: Skip NDA II 2029, target NDA I 2029 (notification usually comes out around December 2028). You'll have plenty of time to prepare since you'd currently be around 18 when that notification drops.