a class of 20 students have one week to complete a math assignment of 30 questions. at the end of the first day, the students had completed the following number of questions: 5, 7, 4, 6, 1, 8, 9, 4, 4, 5, 10, 4, 6, 5, 3, 6, 5, 6, 0, 2 how many modes are in the given data set? 3 5 2 4