Quote:
Originally Posted by beernutz
If you are 21 years old that is the average of when you were 0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 + 21 divided by 22 for an average age of 10 and 1/2.
You're welcome.

In general, for a chronological age of N years, the above always simplifies to N/2.