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 10^\text{th}10 th 10, start superscript, start text, t, h, end text, end superscript 11^\text{th}11 th 11, start superscript, start text, t, h, end text, end superscript 12^\text{th}12 th 12, start superscript, start text, t, h, end text, end superscript number of students 777 181818 555 suppose that rosalyn wants 222 different students, so she picks 222 names without replacing names between picks. what is the probability that both students selected are 11^\text{th}11 th 11, start superscript, start text, t, h, end text, end superscript graders?
