Which of the following is a prime number?

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Prepare for the CSET Multiple Subjects Subtest 2. Dive into math and science with flashcards and multiple choice questions, each question offering hints and explanations. Gear up for your success!

Multiple Choice

Which of the following is a prime number?

Explanation:
Prime numbers are integers greater than 1 that have exactly two distinct positive divisors: 1 and the number itself. Check each number: four is divisible by two, so it has a divisor other than 1 and itself. six is divisible by two and three, so it’s not prime. nine is divisible by three, so it’s not prime. seven has no divisors other than 1 and itself, so it is prime. Thus, the prime number among these is seven.

Prime numbers are integers greater than 1 that have exactly two distinct positive divisors: 1 and the number itself.

Check each number: four is divisible by two, so it has a divisor other than 1 and itself. six is divisible by two and three, so it’s not prime. nine is divisible by three, so it’s not prime. seven has no divisors other than 1 and itself, so it is prime.

Thus, the prime number among these is seven.

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