What is the mean (average) of the following set of numbers: 12, 18, 15, 20, 10?

A 10

B 15

C 18

D 75

✓ Correct Answer: Option B

To find the mean, sum all the numbers: 12 + 18 + 15 + 20 + 10 = 75. Then, divide the sum by the count of numbers (5): 75 / 5 = 15.

💡 Why is B) the correct answer?

The correct answer to the question "What is the mean (average) of the following set of numbers: 12, 18, 15, 20, 10?" is Option B: 15.

The other options — A) 10, C) 18, D) 75 — are incorrect for this GED Exam Prep question. As explained above: To find the mean, sum all the numbers: 12 + 18 + 15 + 20 + 10 = 75. Then, divide the sum by the count of numbers (5): 75 / 5 = 15.

📚 About This GED Exam Prep Practice Question

This 2-level GED Exam Prep question from the Mathematical 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 GED Exam Prep practice test or use flashcards for spaced repetition review.

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What is the mean (average) of the following set of numbers: 12, 18, 15, 20, 10?

✓ Correct Answer: Option B

📚 About This GED Exam Prep Practice Question

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