Difficulty: Easy
Correct Answer: 23 20
Explanation:
Introduction / Context:
This problem checks your ability to spot a simple arithmetic progression with a negative common difference. Such patterns are common in quick-calculation tests.
Given Data / Assumptions:
Concept / Approach:
Compute the difference between consecutive terms. If the difference is consistent, extend by subtracting the same amount.
Step-by-Step Solution:
Verification / Alternative check:
Re-list last few: 32, 29, 26, 23, 20 — maintains the −3 step.
Why Other Options Are Wrong:
Common Pitfalls:
Accidentally subtracting −2 or −4 due to mental slip.
Final Answer:
23 20
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