SSC CGL Letter Series Questions with Detailed Solutions

Get SSC CGL Letter Series Questions to prepare for your upcoming exam. Solve the most expected questions and detailed solutions that can be asked in the exam.

Important SSC CGL Letter Series Questions

Q1.

Find the next letter in the series:
V, S, O, J, ?

  • A.

    C

  • B.

    D

    ✓ Correct
  • C.

    E

  • D.

    F

Answer & Solution

Correct option is B

Information Given:
Series: V, S, O, J, ?

Logic:
V(22) → S(19) = −3
S(19) → O(15) = −4
O(15) → J(10) = −5
Next: −6

Explanation:
J(10) − 6 = 4 → D

Short Trick:
Subtract 3, 4, 5, 6 → D.

Final Answer:
D

Final Correct Option:
(B) D

Q2.

Find the next letter in the series:
D, I, O, V, ?

  • A.

    D

    ✓ Correct
  • B.

    C

  • C.

    F

  • D.

    E

Answer & Solution

Correct option is A

Information Given:
Series: D, I, O, V, ?

Logic:
Positions: D(4) → I(9) → O(15) → V(22)
Differences: +5, +6, +7 → next +8

Explanation:
V(22) + 8 = 30 → 30 − 26 = 4 = D

Short Trick:
Add consecutive numbers: +5, +6, +7, +8 → D.

Final Answer:
D

Final Correct Option:
(A) D

Q3.

Few of the letters are given followed by a question mark (?) these letters are following a specific pattern you have to give the correct option which can replace question mark.
Which letter should be next: P, M, J, G, ?

  • A.

    D

    ✓ Correct
  • B.

    E

  • C.

    F

  • D.

    G

Answer & Solution

Correct option is A

Given:
Series: P, M, J, G, ?
The letters are decreasing by 3 positions each time:
P → M = −3
M → J = −3
J → G = −3
G → D = −3
Therefore, the next letter is D.
Correct Answer: A. D​​​
Q4.

Few of the letters are given followed by a question mark (?) these letters are following a specific pattern you have to give the correct option which can replace question mark.
B, G, M, T, ?

  • A.

    Z

  • B.

    A

  • C.

    B

    ✓ Correct
  • D.

    C

Answer & Solution

Correct option is C

Information Given:
Series: B, G, M, T, ?
Logic: Alphabet positions increase by +5, +6, +7, +8.
Explanation:
B(2) → G(7) = +5
G(7) → M(13) = +6
M(13) → T(20) = +7
T(20) → 28 → wrap around → B
Final Answer:
B
Final Correct Option:
C) B
Q5.

Which of the following letter should come on the place of ? to complete the series
A, C, E, G, ?

  • A.

    H

  • B.

    I

    ✓ Correct
  • C.

    J

  • D.

    K

Answer & Solution

Correct option is B

Given
Series: A, C, E, G, ?

Formula Used
Positional values of English alphabets with common difference

Solution
Writing the positional values of the letters:
A = 1
C = 3
E = 5
G = 7

The common difference between successive letters is:
3 - 1 = 2
5 - 3 = 2
7 - 5 = 2

Following the pattern, next position = 7 + 2 = 9 (which is I).

Final Answer
So the correct answer is (b)

Q6.

Find the next letter in the series:
B, F, K, Q, ?

  • A.

    X

    ✓ Correct
  • B.

    Y

  • C.

    Z

  • D.

    W

Answer & Solution

Correct option is A

​Series: B, F, K, Q, ?​
B → F = +4
F → K = +5
K → Q = +6
Q → ? = +7
Q + 7 = X
Answer: A. X
Q7.

Find the next letter in the series:
G, N, U, B, ?

  • A.

    L

  • B.

    Q

  • C.

    I

    ✓ Correct
  • D.

    O

Answer & Solution

Correct option is C

Given
Letter series: G, N, U, B, ?
Logic: The letters follow a pattern of adding 7 to each letter, considering the alphabet cyclically.
G + 7 = N
N + 7 = U
U + 7 = B (after Z, the sequence starts again from A)
B + 7 = I
Therefore, the next letter I.
Correct Answer: (c) I
Q8.

Identify the letter from the options that substitutes the question mark (?) in the following sequence. A, A, B, F, ?

  • A.

    W

  • B.

    X

    ✓ Correct
  • C.

    Z

  • D.

    Y

Answer & Solution

Correct option is B

Given
Letter series: A, A, B, F, ?

Formula Used
Factorial / multiplicative position pattern: Pos(n) × n.

Solution
Convert letters to their numerical positions in the alphabet:
A = 1
A = 1 = 1 × 1
B = 2 = 1 × 2
F = 6 = 2 × 3
Next term = 6 × 4 = 24
The 24th letter of the alphabet is X.

Final Answer
So the correct answer is (b)

Q9.

Select the letter-cluster that can replace the question mark (?) in the following series K, M, P, T, Y, ?

  • A.

    E

    ✓ Correct
  • B.

    U

  • C.

    S

  • D.

    W

Answer & Solution

Correct option is A

Given
Letter series: K, M, P, T, Y, ?

Formula Used
Consecutively increasing difference in alphabet positions.

Solution
Find the numerical positions of the given letters:
K = 11
M = 13 (11 + 2)
P = 16 (13 + 3)
T = 20 (16 + 4)
Y = 25 (20 + 5)
The next increment must be +6:
25 + 6 = 31
31 - 26 = 5
The 5th letter of the English alphabet is E.

Final Answer
So the correct answer is (a)

Q10.

Find the next letter in the series:
F, M, T, A, H, ?

  • A.

    O

    ✓ Correct
  • B.

    P

  • C.

    Q

  • D.

    R

Answer & Solution

Correct option is A

Given
Series: F, M, T, A, H, ?

Formula Used: ​The pattern is +7 letters, moving cyclically through the alphabet.
Solution
Positional values of letters:
F = 6
M = 13 (6 + 7)
T = 20 (13 + 7)
A = 1 (20 + 7 = 27 = 26 + 1)
H = 8 (1 + 7)

Next letter position = 8 + 7 = 15
Position 15 corresponds to the letter O.

Final Answer
So the correct answer is (a)

Q11.

Find the next letter in the series:
P, S, V, Y, ?

  • A.

    B

    ✓ Correct
  • B.

    C

  • C.

    D

  • D.

    E

Answer & Solution

Correct option is A

Given
Series: P, S, V, Y, ?

Formula Used
Positional difference in the English alphabetical series.

Solution
Positional values of letters:
P = 16
S = 19 (16 + 3)
V = 22 (19 + 3)
Y = 25 (22 + 3)

Next letter position = 25 + 3 = 28
Since the alphabet has 26 letters:
28 - 26 = 2, which corresponds to B.

Final Answer
So the correct answer is (a)

Q12.

Select the letter-cluster that can replace the question mark (?) in the following series.
K, J, ?, H, G, F

  • A.

    H

  • B.

    I

    ✓ Correct
  • C.

    E

  • D.

    J

Answer & Solution

Correct option is B

Given
The given letter series is: K, J, ?, H, G, F

Formula Used
Positional values of English alphabetical letters in forward order (A = 1, B = 2, ..., Z = 26).

Solution
Positional values of the letters are:
K = 11
J = 10
H = 8
G = 7
F = 6

Pattern followed:
11 - 1 = 10 (J)
10 - 1 = 9 (I)
9 - 1 = 8 (H)
8 - 1 = 7 (G)
7 - 1 = 6 (F)

The missing letter corresponds to positional value 9, which is I.

Final Answer
So the correct answer is (b)

Q13.

Find the next letter in the series:
B, E, H, K, N, ?

  • A.

    P

  • B.

    R

  • C.

    S

  • D.

    Q

    ✓ Correct

Answer & Solution

Correct option is D

Given
The given letter series is: B, E, H, K, N, ?

Formula Used
Positional values of English alphabetical letters in forward order (A = 1, B = 2, ..., Z = 26).

Solution
Positional values of the letters are:
B = 2
E = 5
H = 8
K = 11
N = 14

The pattern followed is an addition of 3 at each successive step:
2 + 3 = 5 (E)
5 + 3 = 8 (H)
8 + 3 = 11 (K)
11 + 3 = 14 (N)
14 + 3 = 17 (Q)

The next letter in the series is Q.

Final Answer
So the correct answer is (d)

Q14.

Find the next letter in the series:
C, G, K, O, S, ?

  • A.

    V

  • B.

    W

    ✓ Correct
  • C.

    X

  • D.

    Z

Answer & Solution

Correct option is B

Given
The given letter series is: C, G, K, O, S, ?

Formula Used
Positional values of English alphabetical letters +4

Solution
Positional values of the letters are:
C = 3
G = 7
K = 11
O = 15
S = 19

The pattern followed is an addition of 4 at each successive step:
3 + 4 = 7 (G)
7 + 4 = 11 (K)
11 + 4 = 15 (O)
15 + 4 = 19 (S)
19 + 4 = 23 (W)

The letter corresponding to positional value 23 is W.

Final Answer
So the correct answer is (b)

Q15.

Find the next letter in the series:

E, K, R, Z, ?

  • A.

    K

  • B.

    J

  • C.

    I

    ✓ Correct
  • D.

    H

Answer & Solution

Correct option is C

Information Given:
Series: E, K, R, Z, ?

Logic:
E → K = +6
K → R = +7
R → Z = +8
Z → ? = +9

Explanation:
Z + 9 → I (after wrapping around the alphabet)

Short Trick:
Differences increase by 1: +6, +7, +8, +9.

Final Answer:
I

Final Correct Option:
(c) I