Question

if a persons birthday is on 29thbof Feb then his age (1 year) increases after 4 years ?​

Answer 1

Answer:

Those born on that day don't always get to celebrate their actual birthday — since that date occurs only every four years. Someone born on Leap Day typically celebrates birthdays on Feb.  If you were born on Leap Day 1920, you would be 100 years old, or 25 in Leap Day years.