Download the Problem of Arithmetic Rational Number MCQs with Free PDF for PPSC, FPSC, PMS, NTS, KPKPSC, and SPSC exam
A rational number is a number that can be expressed as the quotient or fraction of two integers, where the denominator is not equal to zero. For example, 1/3, 2/4, 1/5, 9/3, and so on are all rational numbers.
The word "rational" comes from the Latin word "rationalize", meaning "reasonable or logical". This is because rational numbers can be expressed as a ratio of two integers, which is a logical way of representing a number.
Rational numbers are a subset of real numbers. Real numbers are all the numbers that can be represented on a number line, including rational numbers and irrational numbers. Irrational numbers are numbers that cannot be expressed as a ratio of two integers, such as pi (π) and the square root of 2.
Rational numbers are used in many different areas of mathematics, including arithmetic, algebra, geometry, and calculus. They are also used in many other fields, such as physics, engineering, and computer science.
Here are some of the properties of rational numbers:
- Rational numbers can be added, subtracted, multiplied, and divided.
- The sum, difference, product, and quotient of two rational numbers is always a rational number.
- The reciprocal of a rational number is also a rational number.
- Every rational number can be expressed as a decimal, either terminating or repeating.
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