Chapter 6 (7) Objectives
As the semester is quickly coming to a conclusion, we have just a few topics
left to explore:
- Permutations: See definition of an r-permutation on
page 289. P(n, r) = n(n-1)(n-2)...(n-r+1),
which closely resemble s the formula for n! Can you write P(n,
r) in terms of n!?
- Combinations: See definition for n choose r on page
306. Theorem 6.4.1
- Counting members of a set, the Inclusion Exclusion Rule Theorem 6.3.3
- Probability of an event
- Counting infinite sets