Assignment:
Process times for all jobs are one hour. Change overs between families require four hours
Thus, the completion time for job 1 is 5, for job 2 is 6, for job 3 is 11, and so on.
![2448_P 2.jpg](https://secure.tutorsglobe.com/CMSImages/2448_P 2.jpg)
a. Compute the total tardiness of the sequence.
b. How many possible sequences are there?
c. Find a sequence with no tardiness.