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    In the following number-pairs, the second number is obtained by applying certain mathematical operations to the firstnumber. Select the set in which t
    Question

    In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first
    number. Select the set in which the numbers are related in the same way as are the numbers of the following sets.
    (Note: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
    56, 63.4
    84, 91.4

    A.

    71 , 78.4

    B.

    95 , 112.4

    C.

    42 , 46.4

    D.

    33 , 49.4

    Correct option is A

    Given: 
    56 and 63.4:
    56 + 7.4 = 63.4
    84 and 91.4:
    84 + 7.4 = 91.4
    Logic: Thus, the relationship is an increase of 7.4.
    Now, let's check each of the options using the same logic:
    A: 71 and 78.4:
    71 + 7.4 = 78.4 (follows the same logic)
    B: 95 and 112.4:
    95 + 7.4 = 102.4 ( it does not match )
    C: 42 and 46.4:
    42 + 7.4 = 49.4  ( it does not match )
    D: 33 and 49.4:
    33 + 7.4 = 40.4 (it does not match )
    Thus, the correct option is (a) 71 and 78.4

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