Answer plz first right answer gets brain

1. 11
2.
t = 51 - 13 (bring 13 to the other side)
38
3. 21

The operation is suck a c@ck? !

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.