50 years old now in 2021 - what year born?


Today, 4 August 2021 if a person is 50 years old now, what year was he born? See below:


If 50 years old, year of birth is:
1970 or 1971*
*It depends on whether he was born before or after 1 January 1971.


If now 50 years and his year of birth 1970 if he was born after 4 August 1970 until 31 december 1970 inclusively, and his year of birth is 1971 if he was born from 1 January 1971 to 4 August 1971.


Other examples:

If now 9 years, year of birth 2011 or 2012
If now 12 years, year of birth 2008 or 2009
If now 25 years, year of birth 1995 or 1996
If now 92 years, year of birth 1928 or 1929

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