Basic Classification

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Number: - A number is a mathematical object used in counting and measuring. A notational symbol which represents a number is called a numeral.

Real Number: - The real numbers include all of the measuring numbers.

Imaginary Number: - Number with square root of negative number is called imaginary number. These numbers are in the form of a + ib.

Rational Number: - A rational number is a number that can be expressed as a fraction with an integer numerator and a non-zero natural number denominator.

Irrational Number: - In mathematics, an irrational number is any real number which cannot be expressed as a fraction m/n, where m and n are integers, with n non-zero and is therefore not a rational number.

Integers: - The integers are formed by the natural numbers including 0 (0, 1, 2, 3, ...) together with the negatives of the non-zero natural numbers (−1, −2, −3, ...). Viewed as subset of the real numbers, they are numbers that can be written without a fractional or decimal component, and fall within the set {... −2, −1, 0, 1, 2 ...}.

Fractions: - A fraction is a number that can represent part of a whole.

Proper Fraction: Value of the fraction is less than 1. These are in the form of ½, 2/3 , ¾ ..

Improper Fraction: - Value of the fraction is greater than 1. These are in the form of 3/2 , 4/3 …

Mixed Fraction: - When an integer is given before proper fraction then number is called mixed fraction. Numbers of the form 2¾.

Whole Number: All non negative numbers including Zero. W ~ (0,1,2,3,4...)

Natural Numbers: - All the number starting from 1. N ~ (1,2,3,4...)

Natural Numbers = Whole Number - Zero