Finding Letters in Alphabet Series: Step-by-Step Solution

Let's break down this question about finding a specific letter in the forward English alphabet series. The question asks for a letter's position based on counting from the right and then moving to the left.

Understanding the Forward Alphabet Series

The forward alphabet series refers to the letters A through Z in their standard order:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

There are 26 letters in total.

Step 1: Find the Twelfth Letter from the Right End

We need to count 12 letters starting from Z and moving towards A. Let's list the letters from the right end and their positions:

• 1st from right: Z
• 2nd from right: Y
• 3rd from right: X
• 4th from right: W
• 5th from right: V
• 6th from right: U
• 7th from right: T
• 8th from right: S
• 9th from right: R
• 10th from right: Q
• 11th from right: P
• 12th from right: O

So, the twelfth letter from the right in the forward alphabet series is O.

Step 2: Find the Fourth Letter to the Left of 'O'

Now we need to move 4 positions to the left starting from the letter O. Counting towards the left from O:

• 1st to the left of O: N
• 2nd to the left of O: M
• 3rd to the left of O: L
• 4th to the left of O: K

Therefore, the fourth letter to the left of O is K.

Conclusion: The Final Letter

Following the steps, the letter that is fourth to the left of the twelfth letter from the right in a forward alphabet series is K.

Let's look at the options provided:

1. H
2. P
3. S
4. K

Our result, K, matches option 4.

Revision Table: Alphabet Positions

Additional Information: Positional Reasoning

Questions involving alphabet series positions are common in reasoning sections of competitive exams. Understanding how to count from both ends (left and right) and how to move left or right from a given position is crucial.

A common way to check is to convert positions from the right to positions from the left. If a letter is the $n^{\text{th}}$ letter from the right in a 26-letter alphabet, its position from the left is $26 - n + 1$.

In this question:

• Twelfth letter from the right is position $26 - 12 + 1 = 15$ from the left. The 15th letter is O.
• Fourth letter to the left of the 15th letter is position $15 - 4 = 11$ from the left. The 11th letter is K.

This confirms our counting method.