## Video Links 12-2

**Videos:**

Counting using Combinations (time: 9:56)

Combinations (time: 10:15)

… See the whole entry

**Videos:**

Counting using Combinations (time: 9:56)

Combinations (time: 10:15)

… See the whole entry

Here is a comparison of permutations and combinations.

http://www.mathsisfun.com/combinatorics/combinations-permutations.html

A review of counting principles including the fundamental counting principle, permutations, combinations, and distinguishable permutations.

http://www.richland.cc.il.us/james/lecture/m116/sequences/counting.html

Combinations:

http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut57_comb.htm

A slightly more advanced discussion of combinations can be found here:

http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut57_comb_ans.htm… See the whole entry

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 … See the whole entry

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 … See the whole entry

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3

… See the whole entry- Distinguish permutations and combinations
- License plate problem
- Which method?

**Fundamental Counting Principle **If one task can be performed in

- Committee problem
- definition
- combination formula
- deck of cards

- Pascal’s triangle
*n*choose*r*- table entries

- Counting with the binomial theorem
- binomial theorem
- number of subsets

**Combinations **A combination of