00:01
Okay, we have here three different jobs to be filled, president, vice president and treasurer.
00:08
So in part a then we can choose anyone for any job.
00:15
So for this job then, we can have 15 choices.
00:20
10 computer science, 5 math, so 15 choices for the first job.
00:26
Then second job, the vice president, will be 14 people.
00:30
People left to choose from and then treasurer and it will be 13 people left choose from.
00:37
So 15 times 14 times 13.
00:42
Order is important here than different jobs.
00:45
So it's 15 times 14 times 13.
00:50
So it's 2 ,730 different ways of assigning the three different jobs...