If the pattern continues how many cups of milk does george need to make 6 batches of muffins

That isn't sufficient information,write the whole problem

The mode of the numbers is 29.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.