Points A, O and B are on a straight line. C is a point such that angle A0C=54° and D is a point such that BOD is vertically opposite AOC. Calculate the reflex angle BOC​

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.