Three of the following four letter-clusters are alike In a certain way and one Is different. Pick the odd one out. PTXB GKOS HKNQ MQUY
HKNQ
Finding the Odd Letter Cluster Out
This question asks us to identify the letter cluster that does not follow the same pattern as the other three. We need to look at the relationship between the letters in each cluster, typically their position in the English alphabet.
Analyzing the Letter Clusters
Let's examine each letter cluster provided:
- PTXB: Let's find the position of each letter in the alphabet (A=1, B=2, ..., Z=26).
- P is the 16th letter.
- T is the 20th letter.
- X is the 24th letter.
- B is the 2nd letter.
- From P to T: $20 - 16 = 4$. Pattern: $+4$.
- From T to X: $24 - 20 = 4$. Pattern: $+4$.
- From X to B: This involves wrapping around. From X (24) to Z (26) is 2 steps. From Z (26) to B (2) is 2 steps. Total steps = $2 + 2 = 4$. Alternatively, think of B as 26+2 = 28 in a continuous sequence. $28 - 24 = 4$. Pattern: $+4$.
- MQUY:
- M is the 13th letter.
- Q is the 17th letter.
- U is the 21st letter.
- Y is the 25th letter.
- From M to Q: $17 - 13 = 4$. Pattern: $+4$.
- From Q to U: $21 - 17 = 4$. Pattern: $+4$.
- From U to Y: $25 - 21 = 4$. Pattern: $+4$.
- GKOS:
- G is the 7th letter.
- K is the 11th letter.
- O is the 15th letter.
- S is the 19th letter.
- From G to K: $11 - 7 = 4$. Pattern: $+4$.
- From K to O: $15 - 11 = 4$. Pattern: $+4$.
- From O to S: $19 - 15 = 4$. Pattern: $+4$.
- HKNQ:
- H is the 8th letter.
- K is the 11th letter.
- N is the 14th letter.
- Q is the 17th letter.
- From H to K: $11 - 8 = 3$. Pattern: $+3$.
- From K to N: $14 - 11 = 3$. Pattern: $+3$.
- From N to Q: $17 - 14 = 3$. Pattern: $+3$.
We can see that PTXB, MQUY, and GKOS follow a pattern of adding 4 to the alphabetical position of the previous letter (with wrapping around for PTXB). HKNQ follows a pattern of adding 3.
| Cluster | Letters (Position) | Pattern |
|---|---|---|
| PTXB | P(16) → T(20) → X(24) → B(2) | $+4, +4, +4$ (wrapping) |
| MQUY | M(13) → Q(17) → U(21) → Y(25) | $+4, +4, +4$ |
| GKOS | G(7) → K(11) → O(15) → S(19) | $+4, +4, +4$ |
| HKNQ | H(8) → K(11) → N(14) → Q(17) | $+3, +3, +3$ |
Therefore, HKNQ is the odd one out because it follows a different pattern ($+3$) compared to the other three ($+4$).
Revision Table: Odd One Out Letter Clusters
Revisiting the patterns for each cluster helps confirm the odd one out:
- PTXB: Each letter is 4 positions after the previous one in the alphabet (wrapping around).
- MQUY: Each letter is 4 positions after the previous one in the alphabet.
- GKOS: Each letter is 4 positions after the previous one in the alphabet.
- HKNQ: Each letter is 3 positions after the previous one in the alphabet.
The distinct pattern in HKNQ makes it the odd letter cluster out.
Additional Information: Letter Series Patterns
Letter series and letter clusters in reasoning questions often follow various patterns. These can include:
- Adding a constant number to the alphabetical position (like in this question).
- Subtracting a constant number from the alphabetical position.
- Adding or subtracting numbers that follow a sequence (e.g., +1, +2, +3... or +2, +4, +6...).
- Alternating addition and subtraction.
- Skipping a fixed number of letters.
- Patterns based on vowels and consonants.
- Reverse alphabetical order.
- Combinations of the above.
To solve these questions, it's helpful to write down the alphabetical positions of the letters and look for mathematical or positional relationships.
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