In How many ways a President, Vice President and a water boy can be selected from a group of ten people.

🧠 Explanation:

The number of ways to select a President, Vice President, and water boy from ten people is calculated using permutation, as order matters. Represented as 10P₃, it equals 10 × 9 × 8 = 720 ways. Each role requires a unique person, and permutations account for different arrangements. This concept is fundamental in combinatorics, used in scenarios like team selections or task assignments. Understanding permutations helps solve problems involving ordered selections, relevant in mathematics, statistics, and decision-making processes where specific roles are assigned from a group.