Based on the position in the English alphabetical order, three of the following letter-clusters are alike in some manner and one is different. Select the odd letter-cluster.
Finding the Odd Letter Cluster Based on Alphabetical Position
This question asks us to identify the letter cluster that is different from the others based on the positions of the letters in the English alphabet. We need to examine each cluster and find a pattern or rule that applies to three of them, while the remaining one does not follow the same rule.
Understanding Alphabetical Position
The English alphabet has 26 letters, and each letter has a specific position starting from 1 for 'A' and going up to 26 for 'Z'.
- A = 1
- B = 2
- C = 3
- ...
- Z = 26
Analyzing Each Letter Cluster
Let's find the alphabetical position for each letter in the given clusters and look for a pattern in the sequence of positions.
1. Cluster: CEIO
- C is the 3rd letter.
- E is the 5th letter.
- I is the 9th letter.
- O is the 15th letter.
The sequence of positions is 3, 5, 9, 15.
Let's look at the difference between consecutive positions:
- 5 - 3 = 2
- 9 - 5 = 4
- 15 - 9 = 6
The pattern of differences is +2, +4, +6.
2. Cluster: HJNU
- H is the 8th letter.
- J is the 10th letter.
- N is the 14th letter.
- U is the 21st letter.
The sequence of positions is 8, 10, 14, 21.
Let's look at the difference between consecutive positions:
- 10 - 8 = 2
- 14 - 10 = 4
- 21 - 14 = 7
The pattern of differences is +2, +4, +7.
3. Cluster: JLPV
- J is the 10th letter.
- L is the 12th letter.
- P is the 16th letter.
- V is the 22nd letter.
The sequence of positions is 10, 12, 16, 22.
Let's look at the difference between consecutive positions:
- 12 - 10 = 2
- 16 - 12 = 4
- 22 - 16 = 6
The pattern of differences is +2, +4, +6.
4. Cluster: FHLR
- F is the 6th letter.
- H is the 8th letter.
- L is the 12th letter.
- R is the 18th letter.
The sequence of positions is 6, 8, 12, 18.
Let's look at the difference between consecutive positions:
- 8 - 6 = 2
- 12 - 8 = 4
- 18 - 12 = 6
The pattern of differences is +2, +4, +6.
Comparing the Patterns
Let's put the patterns of differences in a table for easy comparison.
| Cluster | Letter Positions | Differences in Positions | Pattern of Differences |
|---|---|---|---|
| CEIO | 3, 5, 9, 15 | 5-3=2, 9-5=4, 15-9=6 | +2, +4, +6 |
| HJNU | 8, 10, 14, 21 | 10-8=2, 14-10=4, 21-14=7 | +2, +4, +7 |
| JLPV | 10, 12, 16, 22 | 12-10=2, 16-12=4, 22-16=6 | +2, +4, +6 |
| FHLR | 6, 8, 12, 18 | 8-6=2, 12-8=4, 18-12=6 | +2, +4, +6 |
From the table, we can see that the clusters CEIO, JLPV, and FHLR all follow the pattern where the differences between consecutive letter positions are +2, +4, and +6. The cluster HJNU, however, follows the pattern +2, +4, and +7.
Conclusion
Since the pattern for HJNU (+2, +4, +7) is different from the pattern for the other three clusters (+2, +4, +6), HJNU is the odd letter-cluster.
Revision Table: Letter Positions and Patterns
| Cluster | Letters | Positions ($\text{A}=1$) | Difference 1st to 2nd | Difference 2nd to 3rd | Difference 3rd to 4th | Overall Pattern |
|---|---|---|---|---|---|---|
| CEIO | C, E, I, O | 3, 5, 9, 15 | $5 - 3 = 2$ | $9 - 5 = 4$ | $15 - 9 = 6$ | $+2, +4, +6$ |
| HJNU | H, J, N, U | 8, 10, 14, 21 | $10 - 8 = 2$ | $14 - 10 = 4$ | $21 - 14 = 7$ | $+2, +4, +7$ |
| JLPV | J, L, P, V | 10, 12, 16, 22 | $12 - 10 = 2$ | $16 - 12 = 4$ | $22 - 16 = 6$ | $+2, +4, +6$ |
| FHLR | F, H, L, R | 6, 8, 12, 18 | $8 - 6 = 2$ | $12 - 8 = 4$ | $18 - 12 = 6$ | $+2, +4, +6$ |
Additional Information: Solving Odd One Out Questions
Odd one out questions in reasoning often involve finding a common pattern among several items (like numbers, letters, words, or figures) and identifying the one item that doesn't follow that pattern. For letter-based questions, common patterns include:
- Alphabetical positions (as seen in this problem).
- Skipping a certain number of letters between consecutive letters.
- Vowel or consonant patterns.
- Reversing alphabetical order.
- Patterns based on the shape or structure of the letters.
- Sum or product of letter positions.
To solve these questions, it's helpful to list out any relevant information (like alphabetical positions) and systematically look for relationships or rules within each item and then compare these rules across all items.
Important Questions from Jumble Words
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