There are 42 boys and girls participating in an essay-writing competition. of the competitors, 21 are in seventh grade, 14 are in eighth grade, and 7 are in ninth grade. what is the probability of an eighth grader winning the competition? which simulation(s) can be used to represent this situation?

14/42 = 1/3 chance so 33.33% chance that an 8th grader will win

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.