Rosalyn is a teacher who plays a review game with her 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 her class: Grade 1 0 th 10 th 10, start superscript, start text, t, h, end text, end superscript 1 1 th 11 th 11, start superscript, start text, t, h, end text, end superscript 1 2 th 12 th 12, start superscript, start text, t, h, end text, end superscript Number of students 7 77 18 1818 5 55 Suppose that Rosalyn wants 2 22 different students, so she picks 2 22 names without replacing names between picks. What is the probability that both students selected are 1 1 th 11 th 11, start superscript, start text, t, h, end text, end superscript graders?
