9 years old now in 2021 - what year born?


Today, 31 July 2021 if a person is 9 years old now, what year was he born? See below:


If 9 years old, year of birth is:
2011 or 2012*
*It depends on whether he was born before or after 1 January 2012.


If now 9 years and his year of birth 2011 if he was born after 31 July 2011 until 31 december 2011 inclusively, and his year of birth is 2012 if he was born from 1 January 2012 to 31 July 2012.


Other examples:

If now 11 years, year of birth 2009 or 2010
If now 17 years, year of birth 2003 or 2004
If now 29 years, year of birth 1991 or 1992
If now 62 years, year of birth 1958 or 1959

HTML code:
BB code:

More: