And that's because they all have different numbers of pieces of paper. All of the students are not equally likely to get picked. Let's look at method two. The magician starts with the birthday boy and moves counterclockwise, passing up 75 pieces of paper, numbered one through 75. He cycles around the circle until all the pieces are distributed. He then uses a random number generator to pick an integer between one through 75 and chooses to volunteer with that number. So I encourage you to pause this video and think about whether this one, method two, whether that one is fair.