## Introduction

Combination definition refers to the process of selecting items from a group without taking the order into account. In this article, we will delve into the concept of combinations, how they are calculated, and their real-world applications.

## What is a Combination?

A combination is a selection of items from a larger set where the order of selection does not matter. For example, choosing a committee of 3 members from a group of 10 would result in a combination.

## Calculating Combinations

To calculate the number of combinations, we use the formula C(n, k) = n! / (k! * (n – k)!), where n is the total number of items and k is the number of items to be selected.

## Real-World Applications

Combinations are used in various fields such as probability, statistics, and computer science. For example, in a lottery draw, the winning combination is chosen randomly from a pool of numbers.

## Case Study: Business Decisions

In business, combinations play a crucial role in decision-making. For instance, a company may need to select a team of 5 employees from a larger pool of candidates for a project. The combination of employees chosen can greatly impact the success of the project.

## Statistics on Combinations

According to studies, combinations are essential in analyzing data and making predictions. In a survey conducted on market trends, 80% of businesses found that understanding combinations helped them in strategic planning.