Answer :
Final answer:
Variables in math represent unknown quantities that can change in value, such as the number of pages in a book or a person's age.
Explanation:
Variables are symbols used to represent unknown quantities in mathematical expressions or equations. In the given statements, variable appears in options A and B:
- A. Double the number of pages in the book. - Here, the number of pages is the variable as it can vary.
- B. The age of my friend. - The age is a variable as it can change.
Learn more about variables in statements here:
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