Difficulty: Easy
Correct Answer: 10 8
Explanation:
Introduction / Context:
Many quantitative series alternate between two fixed negative differences. Identifying the cycle length and values lets you project future terms confidently.
Given Data / Assumptions:
Concept / Approach:
Calculate consecutive differences and look for an A-B-A-B pattern.
Step-by-Step Solution:
Verification / Alternative check:
The derived pair 10, 8 maintains the exact alternating-difference rhythm.
Why Other Options Are Wrong:
Common Pitfalls:
Assuming a constant difference or reversing the order of the alternating differences. Always write the last few steps explicitly.
Final Answer:
10 8
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