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    Question

    The second number in the given number pairs is obtained

    by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs, EXCEPT one. Find that odd number pair.
    A 12 : 30 Correct Answer Incorrect Answer
    B 16 : 42 Correct Answer Incorrect Answer
    C 20 : 56 Correct Answer Incorrect Answer
    D 24 : 66 Correct Answer Incorrect Answer

    Solution

    The Logic: The second number is obtained by subtracting 2 from the first number and then multiplying the result by 3. Option A (12 : 30) → (12 – 2) x 3 = 10 x 3 = 30 Option B (16 : 42) → (16 – 2   x 3 = 14 x 3 = 42 Option C (20 : 56) → (20 – 2) x 3 = 18 x 3 = 54 Option D (24 : 66) → (24 – 2) x 3 = 22 x 3 = 66

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