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According to the definitions of prime and composite numbers, what makes a counting number prime?
AIt is greater than 1 and its only factors are 1 and itself
BIt is greater than 1 and divisible by exactly three numbers
CIt is any number that is not divisible by 2
DIt is greater than 1 and has more than two factors
Answer & Solution
Correct answer: A. It is greater than 1 and its only factors are 1 and itself
1. The definition requires the number to be a counting number greater than 1.
2. It also requires that the only factors of the number be 1 and the number itself.
3. A composite number, by contrast, is a counting number greater than 1 with additional factors beyond 1 and itself.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.1 Introduction to Whole Numbers_
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