Answer :
The number 66 is an integer, rational number, real number, natural number, and whole number but not an irrational or complex number.
The number 66 is part of several mathematical sets. Firstly, 66 is an integer, which is a set that includes all whole numbers, both positive and negative, as well as zero. Secondly, since 66 is an integer and integers are also included in rational numbers (ratios of integers), 66 is a rational number. Rational numbers can be expressed as the quotient of two integers, and 66 can be represented as 66/1. Furthermore, all integers and rational numbers are also included in the real numbers.
66 is also a natural number because it's a positive integer, and it is a whole number as it's a non-negative integer.
The number 66 is not an irrational number, because irrational numbers cannot be expressed as ratios of integers. Also, 66 is not a complex number as it does not have an imaginary component.
Whole numbers. Rational numbers natural numbers real numbers
