Number system or real number (R) consist of two types namely:
Rational numbers and irrational numbers.
Rational numbers: all teminating or repeating decimals.
Irrational numbers: all terminating and non-repeating decimal fractions.
Rational numbers (O) is divided by two types:
Integers and non-integers.
Integers are numbers in the form of a composite number without a fraction, and non-integers are numbers in fractions.
Integers are furher divided into two types as:
Negative numbers and whole numbers and whole number is further divided into two type as natural number and zero.
From the above description its