Understanding Reverse Alphabetical Order

This question asks us to find the positions of the letters D, O, and G in the English alphabet when it's written in reverse order (Z to A). Normally, the alphabet starts with A=1, B=2, and so on. In the reverse order, Z=1, Y=2, X=3, etc.

Calculating Letter Positions

To find the position of any letter in the reverse alphabet, we can use a simple formula. If we know the letter's standard position (from A=1), its reverse position is calculated as: \(\text{Reverse Position} = 27 - (\text{Standard Position})\) Let's apply this to each letter in the word DOG:

• D:
  • Standard alphabetical position of D is 4.
  • Using the formula: Reverse Position of D = \(27 - 4 = 23\).
• O:
  • Standard alphabetical position of O is 15.
  • Using the formula: Reverse Position of O = \(27 - 15 = 12\).
• G:
  • Standard alphabetical position of G is 7.
  • Using the formula: Reverse Position of G = \(27 - 7 = 20\).

Final Result

Therefore, the alphabetical position indices for the letters D, O, and G in reverse order are 23, 12, and 20, respectively. This corresponds to the sequence 23, 12, 20.