Since the string has already two 2, then we will compute the whole number of strings whose length is 4, over the alphabet {0,1}:

There is then 16 such strings.
They all can be divided by 12 which is the largest number they can be divided by so 12
The end of his round on Saturday was a -5, and the end of his round on Sunday was a 0.
Answer:
the abstract science of number, quantity, and space, either as abstract concepts ( pure mathematics ), or as applied to other disciplines such as physics and engineering ( applied mathematics ).