hi,

llb three years course can be pursued after graduation, generally there is no age limit to apply for llb three years course. you need to go through the college websites which offer this course to know about admission process. however national law university does not have 3 years llb course. I have mention some tier 1 colleges name below;

Faculty of Law, University of Delhi

Jindal Global Law School

BHU Law School

ILS Law College Pune

PU Chandigarh

Symbiosis Law School, Pune

Lucknow University Law Faculty

Kerala Law Academy Law College Trivandram

• Candidate must have 10+2+3 from any recognised institute
• General category students must secure atleast 45% aggregate and 40% for sc/St
• Must be indian
• there's no age limit for giving examination.