Letter Series Reasoning – Solved Questions

Q1. SCD, TEF, UGH, ____, WKL

a) CMN

b) UJI

c) VIJ

d) IJT

Answer – (c) VIJ

Solution: In this letter series, each letter is shifted one position forward in the English alphabet. Starting with “SCD,” we have:

S + 1 = T

C + 1 = D

D + 1 = E

Continuing this pattern:

U + 1 = V

G + 1 = H

So, the missing term is “VIJ.”

Q2. B2CD, _____, BCD4, B5CD, BC6D

a) B2C2D

b) BC3D

c) B2C3D

d) BCD7

Answer – (c) B2C3D

Solution: In this letter and number series, the pattern is as follows:

The letter “B” appears at the beginning of each term.

The number represents a sequential count starting from 2 and increasing by 1 with each term.

The letters “C” and “D” appear in each term.

So, the missing term would be “B2C3D” as it continues the pattern.

Q3. DFH, HJL, LNP, ____, TWR

a) DTV

b) NRT

c) PRS

d) RQS

Answer – (c) B2C3D

Solution: In this letter series, each letter is shifted two positions forward in the English alphabet, and the next letter is added. Starting with “DFH,” we have:

D + 2 = F

F + 2 = H

H + 2 = J

Continuing this pattern:

L + 2 = N

N + 2 = P

So, the missing term is “NRT.”

Q4. ACE, GIK, MOQ, ____, UYK

a) ACG

b) WSK

c) EIS

d) OPS

Answer – (b) WSK

Solution: In this letter series, each letter is shifted two positions forward in the English alphabet, and the next letter is subtracted. Starting with “ACE,” we have:

A + 2 = C

C – 2 = A

E + 2 = G

Continuing this pattern:

M + 2 = O

O – 2 = M

Q + 2 = S

So, the missing term is “WSK.”

Q5. BDF, FGI, JKL, ____, PTV

a) NMN

b) NMO

c) NOP

d) OPM

Answer- (c) NOP

Solution: In this letter series, each letter is shifted three positions forward in the English alphabet, and the next letter is added. Starting with “BDF,” we have:

B + 3 = E

D + 3 = G

F + 3 = I

Continuing this pattern:

J + 3 = M

L + 3 = O

P + 3 = S

So, the missing term is “NOP.”

Q6. KLM, NOP, QRQ, TUT, ____

a) WVW

b) XYZ

c) YZY

d) ABC

Answer – (a) WWW

Solution: In this letter series, each letter is shifted one position forward in the English alphabet, and the next letter is repeated. Starting with “KLM,” we have:

K + 1 = L

L, M

M + 1 = N

N, O, P

P + 1 = Q

Q, R, Q

R + 1 = S

S, T, U, T

Continuing this pattern;

T + 1 = U

U, V, W

W + 1 = X

X, Y, Z

So, the missing term is “WVW.”

Q7. ACE, BDF, EHK, FIL, ____

a) HMP

b) JOM

c) JOP

d) JMN

Answer – (C) JOP

Solution: In this letter series, each letter is shifted one position forward in the English alphabet, and the next letter is skipped. Starting with “ACE,” we have:

A + 1 = B

C, D, E

E + 1 = F

H, I, K

I + 1 = J

L, M, O

Continuing this pattern:

O + 1 = P

So, the missing term is “JOP.”

Q8. PQ, RS, UV, XY, ____

a) AC

b) ZA

c) AB

d) BC

Answer – (b) ZA

Solution: In this letter series, each pair of letters represents consecutive letters in the English alphabet. Starting with “PQ,” we have:

P, Q

R, S

U, V

X, Y

Continuing this pattern:

Z, A

So, the missing term is “ZA,” representing consecutive letters in the English alphabet.

Q9. KL, MN, OP, RS, ____

a) VW

b) YZ

c) WX

d) XT

Answer – (a) VW

Solution: In this letter series, each pair of letters represents consecutive letters in the English alphabet. Starting with “KL,” we have:

K, L

M, N

O, P

Q, R

Continuing this pattern:

S, T

U, V

So, the missing term is “VW.”

Q10. ACEG, DFHJ, EIKL, ____, GMPR

a) HNMQ

b) FIMS

c) FIMT

d) HNLR

Answer – (c) FIMT

Solution: In this letter series, each letter is shifted one position forward in the English alphabet, and the next letter is skipped. Starting with “ACEG,” we have:

A + 1 = B

C, D

E + 1 = F

G, H

Continuing this pattern:

I + 1 = J

K, L

M + 1 = N

O, P

So, the missing term is “FIMT.”

Letter Series Reasoning Questions: Letter Series Reasoning is a sequence of letters, often asked in various competitive exams to evaluate the logical thinking of a candidate. Letter series Reasoning is asked in all competitive exams and various placement tests of companies.  These letter sequences follow particular patterns to challenge candidates to figure out the hidden logic behind them and describe a possible future event following the next letters. 

The Letter series reasoning is an important part of logical reasoning asked in all competitive exams. So candidates are advised to focus on this topic to clear any exam.

The logical Series patterns can differ, including any order, number-based positions in the alphabet, sequences, or changes based on letter positions. 

Simple series might involve a row of letters, while more complex ones feature position differences/different versions or mathematical operations. 

In this article, we have covered some of the most asked Letter Series Reasoning questions along with the solution and also given tips to solve Letter Reasoning Questions. It is recommended to practice these questions – answers to have a good grasp on these topics.