In mathematics, the numbers were classified into different sets that are:
Real Numbers: A set made up of natural, integer, rational, and irrational numbers.
Natural Numbers: A set of numbers that are used to count, is denoted by N, and is N = {1,2,3,4,5, ...}. For every natural number n, there is its next one represented by n + 1.
Whole Numbers: A set made up of natural numbers, their opposites (negative), and zero.
Rational Numbers: A set made up of all the quotients of two whole numbers where the denominator is different from zero
Irrational Numbers: A set made up of all infinite non-periodic decimal numbers.
Based on the above definitions, it can be inferred that the true statements are:
- Some rational numbers are natural numbers
- All integers are integers
- Some integers are natural numbers
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