1. The number of letter pairs that can be formed in any order from any two of the first 13 letters in the alphabet (A-M) is an example of a permutation.
2. The number of permutations of n elements can be determined by using the Fundamental Counting Principle.
3. Without calculating, determine which of the following is greater. Explain.
(a) The number of combinations of 10 elements taken six at a time
(b) The number of permutations of 10 elements taken six at a time