Chances of selection

Question

Suppose your English teacher randomly selects 20% of the papers turned in by students for each assignment and runs them through a program that checks for plagiarism. If there are 5 papers assigned throughout the semester, what is the probability that at least one of your papers will be checked for plagiarism?

Answer 1

20 percent. Each time you submit the paper, there is a 20 percent chance that your teacher will check it for plagiarism.