Jim, Sergio, Sarah, Tyrone, Dawn, Simone, Maria, and Katrina have all been invited to a dinner party. They arrive randomly and each person arrives at a different time. Required:
a. In how many ways can they arrive?
b. In how many ways can Simone arrive first and lan last?
c. Find the probability that Simone will arrive first and lan last.

2

Step-by-step explanation:

750 total students
To find the number of boys you take 420/56. This would tell you the number of students per 1 percent. This would give 7.5 people per 1 percent. Then tale 7.5 times the remaining 44% and that would equal 330 boys in the school. Add boys plus girls and that would get you the 750 total students.