Permutations Combinations and Counting 1) Given there are a committee of 12 people 4 of which are men and 8 women. There needs to be selected a president, vice president, secretary and treasurer. a) How many ways can this be done b) How many ways can this be done where they are all males c) How many ways can this be done if there are two males and two females
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
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