Question 4 of Developing Expert Voices

1. Question 4 Classroom

2. Students and Desks In a classroom with 16 desks arranged in a 4x4 square pattern, 13 students are to be seated a.) How many possible ways can this be done? b.) If 2 students, Oliver and Lilly, want to be seated together side by side in the same row, how many ways can this be done? c.) If 2 students, John and Richard are not to be seated together side by side in the same row, how many ways can this be done? d.) What is the probability that John and Richard will be seated together in the same row?