Malik is a teacher who plays a review game with his class. the game involves writing each student's name on an identical slip of paper and selecting students at random. here's the makeup of his class: grade 10th, 11th, 12th, number of students 6, 14, 5. suppose that malik picks a name, replaces it, and picks a name again. what is the probability that both students selected are 12th graders?