13
The letters "eleven plus two" are an anagram for twelve plus one.
eleven twelfths :]
because in time 11:00 plus two equals 1:00
In modulo 12 arithmetic.
Two plus eleven = thirteen.
Yes.
In that it doesn't. 11 + 2 = 13.
it's 22
6.6 (6.5859375) US gallons.
Time, because 11:00 plus two hours equals 1:00
One and eleven fortieths.
Negative eleven plus twenty is positive 9.