In the following question, select the odd letter/letters from the given alternatives.

Question

Prepp Team · Accepted Answer

Finding the Odd Letter Series

This question asks us to find the letter combination that is different from the others in the given options. This type of problem is common in logical reasoning and involves identifying the pattern or rule that connects the letters within each group.

To solve this, we will look at the position of each letter in the English alphabet. The difference in positions between consecutive letters in each option will reveal a pattern. We can then compare these patterns to find the odd one out.

Analyzing Letter Positions and Patterns

Let's assign numerical values to each letter based on its position in the alphabet (A=1, B=2, ..., Z=26) and calculate the difference between consecutive letters for each option:

GJJL:
- G is the 7th letter.
- J is the 10th letter. Difference: \(10 - 7 = +3\).
- J is the 10th letter. Difference: \(10 - 10 = +0\).
- L is the 12th letter. Difference: \(12 - 10 = +2\).
- The pattern for GJJL is: +3, +0, +2.
EHHK:
- E is the 5th letter.
- H is the 8th letter. Difference: \(8 - 5 = +3\).
- H is the 8th letter. Difference: \(8 - 8 = +0\).
- K is the 11th letter. Difference: \(11 - 8 = +3\).
- The pattern for EHHK is: +3, +0, +3.
ADDG:
- A is the 1st letter.
- D is the 4th letter. Difference: \(4 - 1 = +3\).
- D is the 4th letter. Difference: \(4 - 4 = +0\).
- G is the 7th letter. Difference: \(7 - 4 = +3\).
- The pattern for ADDG is: +3, +0, +3.
VYYB:
- V is the 22nd letter.
- Y is the 25th letter. Difference: \(25 - 22 = +3\).
- Y is the 25th letter. Difference: \(25 - 25 = +0\).
- B is the 2nd letter. Moving from Y to B involves looping around the alphabet (Y → Z → A → B). The positions are 25, 26, 1, 2. The difference from Y to B is \(2 - 25\) mod 26, which is \(+3\) (25+3 = 28; 28 mod 26 = 2).
- The pattern for VYYB is: +3, +0, +3.

Comparing the Patterns

Let's summarize the patterns we found for each option:

Option	Letter Positions	Differences (Pattern)
GJJL	7, 10, 10, 12	+3, +0, +2
EHHK	5, 8, 8, 11	+3, +0, +3
ADDG	1, 4, 4, 7	+3, +0, +3
VYYB	22, 25, 25, 2 (mod 26)	+3, +0, +3

As we can see, the patterns for EHHK, ADDG, and VYYB are all (+3, +0, +3). The pattern for GJJL is (+3, +0, +2), which is different from the other three.

Identifying the Odd One Out

Since GJJL follows a different pattern compared to the other options, it is the odd letter series out.

Revision Table: Key Concepts

Concept	Description
Letter Series	A sequence of letters that follows a specific rule or pattern.
Odd One Out	Identifying the element in a group that does not fit the pattern or rule followed by the others.
Alphabetical Position	The numerical order of letters in the English alphabet (A=1, B=2, etc.). Useful for identifying patterns based on letter spacing.
Cyclic Pattern	A pattern that wraps around, like moving from Z back to A in the alphabet.

Additional Information: Solving Reasoning Questions

To excel in reasoning questions involving letter series and finding the odd one out, consider these tips:

Always write down the alphabetical positions of the letters involved. This makes calculating differences easier.
Look for patterns in differences between consecutive letters, gaps between alternate letters, or relationships between letters at the same position in different options.
Consider different types of patterns: arithmetic progression in positions, skipping letters, vowel/consonant patterns, reverse alphabetical order, etc.
If patterns based on position differences don't work, look for other rules like the number of vowels/consonants, symmetry, or specific sequences.
Practice with various types of letter series questions to become familiar with common patterns.
For cyclic patterns (like VYYB → B), remember the alphabet wraps around.