What does the notation n! (n factorial) represent?

A n × n

B n × (n-1) × (n-2) × ... × 1

C n + (n-1) + (n-2) + ... + 1

D nⁿ

✓ Correct Answer: Option B

n factorial (n!) is the product of all positive integers from 1 to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120.

💡 Why is B) the correct answer?

The correct answer to the question "What does the notation n! (n factorial) represent?" is Option B: n × (n-1) × (n-2) × ... × 1.

The other options — A) n × n, C) n + (n-1) + (n-2) + ... + 1, D) nⁿ — are incorrect for this IB Exam Prep question. As explained above: n factorial (n!) is the product of all positive integers from 1 to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120.

📚 About This IB Exam Prep Practice Question

This 1-level IB Exam Prep question from the Mathematics topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free IB Exam Prep practice test or use flashcards for spaced repetition review.

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What does the notation n! (n factorial) represent?

✓ Correct Answer: Option B

📚 About This IB Exam Prep Practice Question

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