Question

    How many such pairs of digits are there in the number

    713286549 (both forward and backward directions), each which has many digits between them as in the arithmetic series?
    A One Correct Answer Incorrect Answer
    B Two Correct Answer Incorrect Answer
    C Three Correct Answer Incorrect Answer
    D More than four Correct Answer Incorrect Answer
    E None Correct Answer Incorrect Answer

    Solution

    Forward - 36, 39, 25, 69 Backward - 32, 65, 64, 54. 

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