Question

What is a variable?

• A. A mathematical statement
• B. A symbol to represent an unknown quantity in an expression
• C. A constant
• D. An operator

Answer 1

The correct option is B A symbol to represent an unknown quantity in an expression

• A variable is a symbol representing a quantity whose value is unknown. Generally, we use a single letter to represent a variable.
• Suppose there are students in a classroom, here we don't know the actual count of the number of students. So, we will represent the total number of students by x, which is a variable.