Logical Reasoning

Odd One Out

Medium

Based on the English alphabetical order, three of the following four letter cluster pairs are alike in a certain way and thus form a group. Which is the one that does not belong to that group?

GCJA

RNUL

XTAR

SOVB

✅ Correct Option: 4

The standard pattern followed by the group is:

First $\rightarrow$ Second: Subtract 4
Second $\rightarrow$ Third: Add 7
Third $\rightarrow$ Fourth: Subtract 9

Option	Letter Cluster	Numerical Values*	Shift Pattern	Conclusion
1	GCJA	$7 \rightarrow 3 \rightarrow 10 \rightarrow 1$	$-4, \ +7, \ -9$	Matches Group
2	RNUL	$18 \rightarrow 14 \rightarrow 21 \rightarrow 12$	$-4, \ +7, \ -9$	Matches Group
3	XTAR	$24 \rightarrow 20 \rightarrow 1 \rightarrow 18$	$-4, \ +7, \ -9$	Matches Group
4	SOVB	$19 \rightarrow 15 \rightarrow 22 \rightarrow 2$	$-4, \ +7, \ \mathbf{-20}$	Odd One Out

Note on Alphabet Math:

For XTAR: $T(20) + 7 = 27$ , which wraps around the alphabet to start again at A(1).
Similarly, $A(1 \text{ or } 27) - 9 = 18$ , which is R.

Why SOVB Failed

While the first two intervals of SOVB follow the rule ( $S \to O$ is $-4$ and $O \to V$ is $+7$ ), the final step fails:

Expected: $V (22) - 9 = 13$ (Letter M)
Actual: $V (22) \rightarrow B (2)$

2025: Sample Paper

In the following series, only one letter cluster is wrong. Which is the wrong letter cluster?

HAD LEI PIN TMS XQY BUC

2025: Sample Paper

In the following series, only one letter cluster is wrong. Find out the wrong letter cluster.

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2025: Sample Paper

Based on the English alphabetical order, three of the following four are alike in a certain way and thus form a group. Which is the one that does not belong to that group?

2025: Actual Paper

Based on the English alphabetical order, three of the following four are alike in a certain way and thus form a group. Which one does not belong to the group?

Based on the English alphabetical order, three of the following four letter cluster pairs are alike in a certain way and thus form a group. Which is the one that does not belong to that group?

Solution

Why SOVB Failed

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