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    If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 8457312, what will be sum of the highest and lowest digits
    Question

    If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 8457312, what will be sum of the highest and lowest digits in the number thus formed?​

    A.

    7

    B.

    6

    C.

    8

    D.

    9

    Correct option is C

    Original Number: 8 4 5 7 3 1 2
    Odd digits (5, 7, 3, 1): Add 1 → 6, 8, 4, 2
    Even digits (8, 4, 2): Subtract 2 → 6, 2, 0
    New Number: 6 2 6 8 4 2 0
    Highest digit: 8
    Lowest digit: 0
    Sum: 8 + 0 = 8

    Thus, correct option is (c).

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