American Institute of Certified Planners (AICP) Practice Exam

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What is the range of the numbers 5, 10, 20, 30?

  1. 5

  2. 10

  3. 15

  4. 25

The correct answer is: 25

To find the range of a set of numbers, you subtract the smallest number from the largest number. In this case, the smallest number in the set is 5, and the largest number is 30. Therefore, the range is calculated as follows: 30 (largest number) - 5 (smallest number) = 25. This calculation shows that the range of the numbers 5, 10, 20, and 30 is 25. Understanding the method of calculating the range is essential as it provides insights into the variability of a data set. In this instance, option D is correct because it accurately reflects the result of this calculation.

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