When the letters of SELFRIGHTEOUSNESS are reversed, which letter remains in…

2017

When the letters of SELFRIGHTEOUSNESS are reversed, which letter remains in the same position?

  1. A.

    E

  2. B.

    G

  3. C.

    H

  4. D.

    T

Attempted by 142 students.

Show answer & explanation

Correct answer: D

For a word with an odd number of letters, only the middle position maps to itself after reversal.

  1. SELFRIGHTEOUSNESS has 17 letters.

  2. After reversal, position i moves to position 18 - i.

  3. The unchanged position satisfies i = 18 - i, so i = 9.

  4. The 9th letter is T.

Therefore, the correct answer is T.

Explore the full course: Niacl Ao It Specialist