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Up: Enumeration Rules
Previous: The matching Problem 10/9
How many ways are there of assigning 10 police officers to
3 different tasks:
We saw how the answer comes out to be:
- Patrol, of which there must be 5.
- Office, of which there must be 2.
- Reserve, of which there will be 3.
In general there will
n objects into r
different categories so that there will be
k1 objects in category 1, k2 in category 2,
and so on (