Difficulty: Medium
Correct Answer: (56, 52, 44)
Explanation:
Introduction / Context:
The reference set decreases by −4, then −8. We need a set with the same ordered pair of differences (not merely “decreasing”).
Given Data / Assumptions:
Concept / Approach:
Compare each choice to find (−4, −8).
Step-by-Step Solution:
(56, 52, 44): 52 − 56 = −4; 44 − 52 = −8 → matches exactly.
Why Other Options Are Wrong:
They either use different gap sizes or a single constant gap.
Final Answer:
(56, 52, 44)
Discussion & Comments