Suppose that a coach must select 5 players to play on a basketball team. • The coach has 13 players to select from. The coach must select a player for each of the five positions: center, power forward, small forward, shooting guard, and point guard. However, it is discovered that only four of the 13 players can play center. There are no other restrictions. How many different teams can be made?
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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