Praxis 5003 Practice Question
Which of the following numbers are prime numbers? Select ALL that apply.
Correct Answer: B,E
Rationale: Prime numbers are defined as natural numbers greater than 1 that have no positive divisors other than 1 and themselves.
Option A (21) is not prime, as it can be divided by 1, 3, 7, and 21.
Option B (23) is prime; its only divisors are 1 and 23.
Option C (25) is not prime because it can be divided by 1, 5, and 25.
Option D (27) is also not prime, as it can be divided by 1, 3, 9, and 27.
Option E (29) is prime, with divisors only being 1 and 29.
Thus, the prime numbers in this set are 23 and 29.
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