Analogy (numbers) — “4 : 9 :: 8 : ?”. Identify the pattern and complete the pair.
Verbal Reasoning
Analogy
Difficulty: Easy
Choose an option
Answer
Correct Answer: 13
Explanation
Introduction / Context:A common simple-number analogy applies a constant increment: 4 → 9 is +5. Apply the same increment to 8 to get the missing term.
Given Data / Assumptions:
- Treat the mapping as A → A + k for a fixed k.
- Here, k = 5.
Concept / Approach:Compute 8 + 5.
Step-by-Step Solution:
4 + 5 = 9 (establish k).8 + 5 = 13.Verification / Alternative check:Competing patterns (squares, etc.) are possible, but the minimal consistent rule here is a simple +5 shift for both pairs.
Why Other Options Are Wrong:They do not equal 8 + 5.
Common Pitfalls:Overcomplicating with non-linear transforms when a constant difference suffices.
Final Answer:13