>>10849437She can still count her age on her fingers, under the hypothesis that she has twenty-nine fingers.
Assuming she has ten fingers, she can still count her age on her fingers if the n-th finger represents the n-th prime number.
The sum of the digits in twenty-nine is eleven, which is one more than the nominal amount of fingers a normal person possesses.
Twenty-nine is the number of letters in the Cyrillic alphabet if you remove ?, ?, ? and ?. Some mathematicians are Russian, so this counts as a math-related fact about twenty-nine. From now on I'll call such facts "29-Factoids".
Here is a another 29-Factoid: singing to someome twenty-nine times the "birthday song" (the birthday song is defined as: happy birthday to you [end of line] happy birthday to you [end of line] happy birthday [pause] happy birthday [end of line] happy birthday to you [end of song]) would make you take approximately fifty-eight inspirations (breathing). This is a science fact.
Here is another 29-Factoid: there are twenty-nine holes on the human body. This is exactly the same number of holes as in the twenty-nine-holed torus, a simple four-dimensional object.
Here is another 29-Factoid: twenty-nine, even though it is a prime number, does not generate a Mersenne prime. That is to say, is a composite number. That makes twenty-nine a TERRIBLE age to be.
Here is another 29-Factoid: twenty-nine is the sum of nothing interesting at all.