Chapter Overview
This chapter deals with the fundamental principles of counting. It introduces permutations (arrangements where order matters) and combinations (selections where order does not matter). These concepts are essential in probability, algebra, and various practical situations involving arrangement and selection.
Important Keywords
- Factorial (n!): Product of all natural numbers up to n.
- Permutation: An arrangement of items in a specific order.
- Combination: A selection of items where order does not matter.
- Fundamental Principle of Counting: If one event can occur in m ways and another in n ways, then both together can occur in m × n ways.
Detailed Notes
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