🧠 GRE Exam Prep

How many positive factors does the number 144 have?

A 10
B 12
C 15
D 18

✓ Correct Answer: Option C

The prime factorization of 144 is 2^4 * 3^2. To find the number of factors, add 1 to each exponent and multiply the results: (4+1) * (2+1) = 5 * 3 = 15.

💡 Why is C) the correct answer?

The correct answer to the question "How many positive factors does the number 144 have?" is Option C: 15.

The other options — A) 10, B) 12, D) 18 — are incorrect for this GRE Exam Prep question. As explained above: The prime factorization of 144 is 2^4 * 3^2. To find the number of factors, add 1 to each exponent and multiply the results: (4+1) * (2+1) = 5 * 3 = 15.

📚 About This GRE Exam Prep Practice Question

This 2-level GRE Exam Prep question from the Quantitative Reasoning 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 GRE Exam Prep practice test or use flashcards for spaced repetition review.

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