This riddle sounds impossible at first:
“A man is 20 years old but has only had 5 birthdays. How is that possible?”
The trick is in the date he was born.
He was born on February 29, a date that normally appears only during leap years. That means his actual birth date has appeared only once every four years.
By the time he turns 20, February 29 has occurred five times since his birth.
Answer: He was born on February 29.


