Letter and Symbol Series QA || Reasoning

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Question 1:

Identify the missing term in the following series based on both letter and number patterns.

Series:
SCD, TEF, UGH, ____, WKL

Options:
A) CMN
B) UJI
C) VIJ
D) IJT

Answer: C) VIJ

Explanation:
This sequence follows two alphabetical patterns:

  • The first letters progress sequentially: S, T, U, V, W
  • The second and third letters also follow a consistent pattern: CD, EF, GH, IJ, KL

Thus, the missing term is VIJ.

Question 2:

Find the missing term in the series below:

Series:
B2CD, _____, BCD4, B5CD, BC6D

Options:
A) B2C2D
B) BC3D
C) B2C3D
D) BCD7

Answer: B) BC3D

Explanation:
Since the letters remain unchanged, we focus on the number sequence: 2, 3, 4, 5, 6.
Following this pattern, the missing term must contain 3.
Thus, the correct answer is BC3D.

Question 3:

Determine the missing term in the sequence:

Series:
FAG, GAF, HAI, IAH, ____

Options:
A) JAK
B) HAL
C) HAK
D) JAI

Answer: A) JAK

Explanation:

  • The second letter remains constant (A).
  • The first and third letters progress alphabetically: F → G → H → I → J and G → F → I → H → K (alternating positions).
    Thus, the missing term is JAK.

Question 4:

Find the missing term:

Series:
ELFA, GLHA, ILJA, _____, MLNA

Options:
A) OLPA
B) KLMA
C) LLMA
D) KLLA

Answer: D) KLLA

Explanation:

  • The second and fourth letters remain constant (L and A).
  • The first and third letters follow alphabetical order: E → G → I → K → M and F → H → J → L → N.
    Thus, the missing term is KLLA.

Question 5:

Identify the missing term:

Series:
CMM, EOO, GQQ, _____, KUU

Options:
A) GRR
B) GSS
C) ISS
D) ITT

Answer: C) ISS

Explanation:

  • The first letters increase alphabetically, skipping one letter each time: C, E, G, I, K.
  • The second and third letters follow a pattern with repeated characters: M → O → Q → S → U.
    Thus, the missing term is ISS.

Question 6:

Find the missing term in the sequence:

Series:
ZA5, Y4B, XC6, W3D, _____

Options:
A) E7V
B) V2E
C) VE5
D) VE7

Answer: D) VE7

Explanation:

  • The first letters follow reverse alphabetical order: Z → Y → X → W → V.
  • The second letters follow normal alphabetical order: A → B → C → D → E.
  • The numbers follow an alternating pattern: 5 → 4 → 6 → 3 → 7.
    Thus, the missing term is VE7.

Question 7:

Find the missing term:

Series:
QPO, NML, KJI, _____, EDC

Options:
A) HGF
B) CAB
C) JKL
D) GHI

Answer: A) HGF

Explanation:
Each set of letters follows a reverse alphabetical order:

  • Q → N → K → H → E
  • P → M → J → G → D
  • O → L → I → F → C

Thus, the missing term is HGF.

Question 8:

Determine the missing term in the series:

Series:
JAK, KBL, LCM, MDN, _____

Options:
A) OEP
B) NEO
C) MEN
D) PFQ

Answer: B) NEO

Explanation:

  • The first and third letters follow alphabetical order: J → K → L → M → N and K → L → M → N → O.
  • The second letters follow: A → B → C → D → E.
    Thus, the missing term is NEO.

Question 9:

Identify the missing term in the sequence:

Series:
BCB, DED, FGF, HIH, ___

Options:
A) JKJ
B) HJH
C) IJI
D) JHJ

Answer: A) JKJ

Explanation:

  • The first and third letters follow an alphabetical sequence: B → D → F → H → J.
  • The second letter follows: C → E → G → I → K.
    Thus, the missing term is JKJ.

Question 10:

Find the missing term:

Series:
P5QR, P4QS, P3QT, _____, P1QV

Options:
A) PQW
B) PQV2
C) P2QU
D) PQ3U

Answer: C) P2QU

Explanation:

  • The first two letters P and Q remain the same.
  • The numbers decrease: 5 → 4 → 3 → 2 → 1.
  • The last letters progress: R → S → T → U → V.
    Thus, the missing term is P2QU.

Question 11: Find the Missing Term

Series: A, D, G, J, ?

Options:
A) K
B) L
C) M
D) N

Answer: C) M

Explanation:
Each term in the series is the next third letter in the alphabetical sequence. Following this pattern, the missing term is M.

Question 12: Find the Next Two Terms

Series: Z, S, W, O, T, K, Q, G, ?, ?

Options:
A) N, C
B) N, D
C) O, C
D) O, D

Answer: A) N, C

Explanation:
The pattern follows a specific sequence, where the letters alternate in a structured manner. By following this pattern, the missing terms are N and C.

Question 13: Identify the Missing Term

Series: AB, DEF, HIJK, ?, STUVWX

Options:
A) LMNO
B) LMNOP
C) MNOPQ
D) QRSTU

Answer: C) MNOPQ

Explanation:
The series follows a pattern where each term increases in the number of letters. The missing term fitting this sequence is MNOPQ.

Question 14: Complete the Pattern

Series: abca_bcaab_ca_bbc_a

Options:
A) ccaa
B) bbaa
C) abac
D) abba

Answer: C) abac

Explanation:
The pattern follows structured repetition. Analyzing the missing positions, the correct term is abac.

Question 15: Fill in the Missing Letters

Series: _cb_ca_bacb_ca_bac_d

Options:
A) badddb
B) bbbddd
C) addddb
D) addbbb

Answer: C) addddb

Explanation:
The pattern follows a repeating structured sequence. By analyzing it, the missing term is addddb.

Question 16: Identify the Next Terms

Series: C-3, E-5, G-7, I-9, ?, ?

Options:
A) M-18, K-14
B) K-11, M-13
C) X-24, M-21
D) O-15, X-24

Answer: B) K-11, M-13

Explanation:
The pattern follows an increasing sequence for both letters and numbers. Thus, the next terms are K-11 and M-13.

Question 17: Find the Next Term

Series: P3C, R5F, T8I, V12L, ?

Options:
A) Y17O
B) X16M
C) X17O
D) X16O

Answer: C) X17O

Explanation:
The pattern follows a structured increment in both letters and numbers. The correct answer is X17O.

Question 18: Identify the Missing Term

Series: 9Z-20, 11A-18, 13Y-16, 15B-14, ?

Options:
A) 17X-12
B) 17X-13
C) 13X-17
D) 13X-12

Answer: A) 17X-12

Explanation:
Each part of the sequence follows a structured decrement. The correct answer is 17X-12.

Question 19: Find the Missing Term

Series: CMM, EOO, GQQ, _____, KUU

Options:
A) GSS
B) ITT
C) GRR
D) ISS

Answer: D) ISS

Explanation:
The first letters follow an alphabetical order increase, while the second and third letters follow a repeating pattern. The missing term is ISS.

Question 20: Fill in the Blanks

Series: l_n_mllm_n_l

Options:
A) mnmn
B) mnnm
C) mnmm
D) nmmn

Answer: B) mnnm

Explanation:
The pattern consists of alternating sequences repeating in a structured manner. The missing term is mnnm.

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