In words, it should be five thousand, one hundred and sixty-six years old.
Given that,
The world's oldest tree should be 5066 in the year 2016.
We have to write the number that should be 100 more using the above number
So, if we add the 100 to the above number i..e
= 5066 + 100
= 5166
So, in words, it should be five thousand, one hundred and sixty-six years old.
Learn more about the number system here: brainly.com/question/22046046
