Find the odd pair: In each ordered pair (A, B), the intended pattern is B = A + 11. Identify the pair that does not follow this +11 difference.
Verbal Reasoning
Classification
Difficulty: Easy
Choose an option
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A46, 57
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B38, 49
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C41, 52
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D64, 73
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ENone of these
Answer
Correct Answer: 64, 73
Explanation
Introduction / Context:Here, each option is an ordered pair (A, B). Most obey a constant-difference rule B = A + 11. The odd pair breaks this rule.
Given Data / Assumptions:
- Pairs: (46, 57), (38, 49), (41, 52), (64, 73).
- Compute B − A to verify the rule.
Concept / Approach:Calculate B − A for each pair. Any result not equal to 11 flags the odd pair.
Step-by-Step Solution:
(46, 57): 57 − 46 = 11 → fits.(38, 49): 49 − 38 = 11 → fits.(41, 52): 52 − 41 = 11 → fits.(64, 73): 73 − 64 = 9 → violates.Verification / Alternative check:Reverse differences A − B should be −11 for valid pairs; only the last gives −9, confirming the mismatch.
Why Other Options Are Wrong:They match the +11 relation and are therefore not odd.
Common Pitfalls:Mental subtraction errors with close numbers. Always compute carefully.
Final Answer:64, 73 is the odd pair.