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To which set of numbers does the number 0.15 belong?
Natural numbers
Whole numbers
Integers
Rational numbers
The correct answer is: Rational numbers
The number 0.15 belongs to the set of rational numbers. Natural numbers include positive whole numbers starting from 1, whole numbers include all natural numbers and 0, integers include both positive and negative whole numbers, but 0.15 is not a whole number. Integers also include negative numbers, but 0.15 is a positive number. Therefore, 0.15 is not a natural number, whole number, or an integer. It is a decimal number that can be expressed as a fraction, which makes it a rational number.