Algebra-1

Question Analysis
This question tests the student's ability to recognize and identify discrete variables. The number of books in a library can only be a whole number, making it a discrete variable.

Key Concept Explanation
Discrete variables are those that can only take on specific, isolated values. They are typically obtained by counting and cannot have fractional or decimal values.

Step-by-step Solution
1. Identify the type of variable: The nu...