An arithmetical value expressed by a symbol and used for counting and making calculations is called.
The Correct Answer and Explanation is:
The correct answer is “number.”
A number is an arithmetical value that is used to express quantity and perform calculations. It is represented by symbols such as numerals (like 1, 2, 3) and can be used in a wide range of mathematical and real-life contexts. Numbers are fundamental to mathematics, which is a universal language used for analyzing patterns, solving problems, and describing relationships in the world around us.
There are different types of numbers, including:
- Natural numbers (1, 2, 3, …): Used for counting.
- Whole numbers (0, 1, 2, …): Natural numbers including zero.
- Integers (…, -2, -1, 0, 1, 2, …): Include negative numbers.
- Rational numbers (fractions like ½, 3/4): Expressed as a ratio of two integers.
- Irrational numbers (like √2 or π): Cannot be expressed as a simple fraction.
- Real numbers: Include both rational and irrational numbers.
- Complex numbers: Include real and imaginary parts (like 3 + 2i).
In arithmetic and basic mathematics, numbers are used to perform operations such as addition, subtraction, multiplication, and division. These operations allow people to measure, compare quantities, and solve problems in everyday life, science, and technology.
For example, when buying items at a store, people use numbers to calculate prices, apply discounts, and determine totals. Engineers use numbers to design structures, and scientists use them to analyze data from experiments. In all these cases, numbers serve as symbols of value that make complex tasks manageable and understandable. They are essential tools in both abstract reasoning and practical decision-making.
