Homework 7, assigned :
assigned: MON DEC 3, due TUE MDEC 11
All due times are at 11:59 pm on the due date.

Write a program that produces the output shown on slide 26 of the presentation Powerpoint for more Probability . The problem is the birthday problem for a planet that has 20 days in a year. The results show the probability of non-coincidence and that of birthday coincidence for a class that varies from 1 to 21 students.

After a time (when the value of num becomes 20), the value of prod will become zero.