Sum of Reciprocals and Remainder

XAT 2014 · QADI · Hard · Number System

Read the following instruction carefully and answer the question that follows:

Expression n=1131n\sum_{n=1}^{13} \frac{1}{n} can also be written as x13!\frac{x}{13!}. What would be the remainder if x is divided by 11?

  1. A.

    2

  2. B.

    4

  3. C.

    7

  4. D.

    9

  5. E.

    None of the above

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