Difficulty: Easy
Correct Answer: 29 31
Explanation:
Introduction / Context:
Alternating-step progressions require attention to the operation order. Here, two small additions repeat in a cycle.
Given Data / Assumptions:
Concept / Approach:
Confirm the alternating pattern and apply the next two operations in order.
Step-by-Step Solution:
Verification / Alternative check:
Continue mentally: after 29,31 the series would again add +5 then +2, preserving the rhythm.
Why Other Options Are Wrong:
Common Pitfalls:
Applying +5 twice in a row or swapping the order of +5 and +2.
Final Answer:
29 31
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