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SSC CGL Model Paper 8

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Question : 5 of 100

Marks: +1, -0

Select the odd letters from the given alternatives.

DFH
KMO
QTW
SUW

Solution:

Concept:

In letter-series odd-one-out, check the gap between consecutive letters.

Explanation:

Convert letters to positions:

\mathrm{A}=1, \mathrm{B}=2, \ldots, \mathrm{Z}=26

.

Check each option:

\mathrm{DFH} \rightarrow \mathrm{D}=4, \mathrm{F}=6, \mathrm{H}=8

, gaps are

+2, +2

.

\mathrm{KMO} \rightarrow \mathrm{K}=11, \mathrm{M}=13, \mathrm{O}=15

, gaps are

+2, +2

.

\mathrm{QTW} \rightarrow \mathrm{Q}=17, \mathrm{T}=20, \mathrm{W}=23

, gaps are

+3, +3

.

\mathrm{SUW} \rightarrow \mathrm{S}=19, \mathrm{U}=21, \mathrm{W}=23

, gaps are

+2, +2

.

All except

\mathrm{QTW}

follow the same

+2

gap pattern.

Answer:

The odd letters are

\mathrm{QTW}

, i.e. option C.

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