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Which of the following letter clusters is the odd one out?
ACE
GIK
MOQ
RTW
RTW
Calculate the difference between consecutive letters in the cluster; look for a constant difference of +2 in three options and a different pattern in the outlier.
Calculate the difference between consecutive letters in the cluster; look for a constant difference of +2 in three options and a different pattern in the outlier.
Analyze Cluster Differences
Convert letters to their alphabetical positions: A=1, C=3, E=5 (Difference: +2, +2). G=7, I=9, K=11 (Difference: +2, +2). M=13, O=15, Q=17 (Difference: +2, +2). R=18, T=20, W=23 (Difference: +2, +3).
Identify Outlier
Options A, B, and C follow a consistent sequence of +2, +2. Option D deviates by ending in +3 (T to W is 20 to 23).
A: Follows the constant +2, +2 rule. B: Follows the constant +2, +2 rule. C: Follows the constant +2, +2 rule.
D is correct because it is the only cluster where the difference between the second and third letter is +3 instead of +2.
Always verify the sequence for all letters in the cluster, as examiners often change only the final interval to create an outlier.