Question
Download Solution PDFThe second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number-pairs except one. Find that odd number-pair.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe logic followed here is :-
First number2 × (First number × 2) = Second number
1) 9 ∶ 1458 → 92 × (9 × 2) = 81 × 18 = 1458
2) 3 ∶ 54 → 32 × (3 × 2) = 9 × 6 = 54
3) 5 ∶ 685 → 52 × (5 × 2) = 25 × 10 = 250
4) 5 ∶ 250 → 52 × (5 × 2) = 25 × 10 = 250
∴ Here, '5 ∶ 685' is different from other three alternatives.
Hence, the correct answer is "5 ∶ 685".
Last updated on Jun 11, 2025
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