Which of the following is a prime factor of 18?

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Prepare for the Praxis Middle School Mathematics Exam with quizzes. Study with flashcards and multiple choice questions. Each question provides hints and detailed explanations. Ensure success on your test!

Multiple Choice

Which of the following is a prime factor of 18?

Explanation:
A prime factor is a prime number that divides the number. Break down 18 into primes: 18 = 2 × 3 × 3, so the prime factors are 2 and 3. Among the choices, 2 is prime and does divide 18, while 4, 6, and 9 are not prime numbers (they’re composite), even though they do divide 18. So 2 is the correct prime factor.

A prime factor is a prime number that divides the number. Break down 18 into primes: 18 = 2 × 3 × 3, so the prime factors are 2 and 3. Among the choices, 2 is prime and does divide 18, while 4, 6, and 9 are not prime numbers (they’re composite), even though they do divide 18. So 2 is the correct prime factor.

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