Use the Combinations Formula

question 15

Multiple Choice

Use the Combinations Formula
-Ron finds 8 books at a bookstore that he would like to buy, but he can afford only 5 of them. In how many ways can he make his selection? How many ways can he make his selection if he decides that one of the books is a must?

• A) 56; 35
• B) 6720; 840
• C) 336; 210
• D) 3360; 420

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Definitions:

Commercial Applications

Refers to the use of equipment, technology, or services in business settings, ranging from small enterprises to large industrial operations.

Industrial Building

A structure designed for the manufacturing, processing, and handling of goods and materials.

Phase Motors

Electric motors that operate on polyphase electric currents, typically used for their efficiency and power capabilities.

Direction

The course along which an object moves or along which it lies or faces, typically in relation to the point of observation.