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In a coding operation C0, SMART is changed to UQBLT and DROP is changed to OPQE.
The coding operation works as follows:

  1. Odd letter of the word is replaced by the letter that follows it (as per the alphabetical sequence)
  2. Even letter of the word is replaced with the one that immediately precedes the letter (in the alphabetical sequence)
  3. The word is written in reverse order to arrive at the code.

Similarly, for other operations of the series, C1,C2,C3….,Cn  each letter is replaced by skipping n letter that precede or follow it.

1. The operations C3C2C0C4 is performed on the word TRUST. What is the output?

a) IHGHI      b) HEHGH           c)KFEHK            d) GEHFG

2. The output of the operation C4C2C0C0 is FCHGPC. What is the input?

a)DECIDE         b)DICIDE           c)DEFINE         d) FEINED

3. What could be the minimum number of operations after which a 8 letter word returns to its initial form?

a)2                       b)13                     c)26                 d)None of these

4. What could be the minimum number of operations after which a 5 letter word returns to its initial form?

a)2                       b)13                      c)26                   d)None of these

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