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    Question

    Select the odd group of numbers. (NOTE: Operations

    should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g.,43 - Operations on 43 such as adding /subtracting /multiplying etc. to 43 can be performed. Breaking down 43 into 4 and 3 and then performing mathematical operations on 4 and 3 is not allowed)
    A (4 - 20 - 500) Correct Answer Incorrect Answer
    B (3 - 15 - 375) Correct Answer Incorrect Answer
    C (6 - 30 - 750) Correct Answer Incorrect Answer
    D (9 – 45 - 975) Correct Answer Incorrect Answer

    Solution

    Logic: First number x 5 = Second number & Second number × 25 = Third number.   (4 - 20 - 500) =    4 × 5 = 20 & 20 x 25 = 500 (Correct)   (3 - 15 - 375) =  3 × 5 = 15 & 15 × 25 = 375 (Correct)   (6 - 30 - 750) =  6 × 5 = 30 & 30 x 25 = 750 (Correct)   (9 - 45 - 975) =  9 × 5 = 45 & 45 × 25 = 1125 (not equal to 975) (Incorrect)   Hence, the correct answer is (D).

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