SSC CGL (Prelims) Reasoning: Alphabet Series questions with solutions

Q1. Select the combination of letters that, when sequentially placed in the blanks of the given series, will logically complete the series: ME_ICM_DIC_GDI_MHD_C

1. DEMAI
2. DCFMI
3. DFMBI
4. DFMCI

Answer: DFMCI

The series is formed by inserting a fixed sequence of letters to create a consistent pattern across the groups. Matching the pattern of transitions between the visible letters leads to the sequence D, F, M, C, I.

Q2. Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster: MSD : NHW :: OAE : LZV :: NIP : ?

1. NSL
2. MRK
3. MQK
4. NRL

Answer: NSL

From MSD to NHW, each letter is shifted forward by 1, 5, and 3 positions respectively. From OAE to LZV, the same type of positional shift is applied in reverse direction. Applying the corresponding pattern to NIP gives NSL.

Q3. Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series: RF_GTR_VG_RFV_T_FVGT

1. VFTGR
2. VFTGG
3. VTTGR
4. VFVGR

Answer: VFTGR

The letter series is built from a repeating pattern, and the missing letters must restore that pattern. Placing VFTGR in the blanks completes the sequence consistently. Hence, VFTGR is correct.

Q4. Which of the following letter-clusters will replace the question mark (?) in the given series to make it logically complete? NUT, RYX, VCB, ZGF, ?

1. EKJ
2. DKL
3. EKL
4. DKJ

Answer: DKJ

The first letters go N, R, V, Z, D: each moves forward by 4. The second letters go U, Y, C, G, K: each also moves forward by 4. The third letters go T, X, B, F, J: again forward by 4. So the next cluster is D K J.

Q5. Select the letter that can replace the question mark (?) in the following series: Y, R, L, G, ?, Z

1. E
2. D
3. C
4. F

Answer: C

The letters move backward in the alphabet by 7, 6, 5, 4, 3, ... positions. So from G, moving back by 4 gives C, and then moving back by 3 gives Z.

Q6. Choose the correct option to complete the series: AC, DF, GI, JL, ?

1. KN
2. MO
3. NP
4. PM

Answer: MO

In the series, the first letters are A, D, G, J, which increase by 3 positions each time. The second letters are C, F, I, L, which also increase by 3 positions each time, so the next pair is M and O.

Q7. Which letter comes next: C, F, I, L, ?

1. N
2. O
3. P
4. Q

Answer: O

The letters advance by 3 positions each time: C to F, F to I, I to L. Continuing the pattern, L to O gives the next letter.

Q8. Complete the pattern: B2, D4, F6, H8, ?

1. J10
2. I10
3. K10
4. J12

Answer: J10

The letter sequence is B, D, F, H, which advances by 2 letters each time, so the next letter is J. The number sequence is 2, 4, 6, 8, which increases by 2 each time, so the next number is 10.

Q9. Complete the series: T, Q, N, K, ?

1. H
2. I
3. G
4. J

Answer: H

The series goes backward by 3 letters each step: T(20), Q(17), N(14), K(11). The next letter is H(8).

Q10. Continue the sequence: A2, C4, E6, G8, ?

1. I10
2. H10
3. J10
4. K10

Answer: I10

The letters follow the odd-position alphabet pattern: A, C, E, G, I. The numbers increase by 2: 2, 4, 6, 8, 10. So the next term is I10.

Q11. What letter follows: P, S, V, Y, ?

1. A
2. B
3. Z
4. X

Answer: B

The sequence advances by 3 letters each step: P → S → V → Y. After Y, moving 3 letters forward gives B, considering the wrap-around after Z.

Q12. Complete the sequence: D5, F7, H9, J11, ?

1. K13
2. L13
3. M13
4. L12

Answer: L13

In the sequence, the letters progress as D, F, H, J, which increases by 2 alphabet positions each time. The numbers progress as 5, 7, 9, 11, increasing by 2, so the next term is L13.

Q13. Continue the sequence: M2, O4, Q6, S8, ?

1. T10
2. U10
3. V10
4. W10

Answer: U10

The letters follow M, O, Q, S, which advance by 2 alphabet positions each time, so the next letter is U. The numbers are 2, 4, 6, 8, so the next number is 10.

Q14. Complete the sequence: D4, F6, H8, J10, ?

1. K12
2. L12
3. M12
4. N12

Answer: L12

The letters follow the pattern D, F, H, J, L, increasing by 2 positions each time. The numbers follow 4, 6, 8, 10, 12, increasing by 2. So the next term is L12.

Q15. Continue the pattern: E3, G5, I7, K9, ?

1. L11
2. M11
3. N11
4. O11

Answer: M11

The letters follow the sequence E, G, I, K, M, increasing by 2 alphabet positions each time. The numbers follow 3, 5, 7, 9, 11, increasing by 2, so the next term is M11.

Q16. What comes next in the pattern: C1, F3, I5, L7, ?

1. M9
2. N9
3. O9
4. P9

Answer: O9

The letters progress by 3 positions each time: C, F, I, L, so the next letter is O. The numbers form an odd-number sequence increasing by 2: 1, 3, 5, 7, so the next number is 9.

Q17. Continue the sequence: A1, D3, G5, J7, ?

1. K9
2. L9
3. M9
4. N9

Answer: M9

The letters follow A, D, G, J, which advance by 3 positions each time, so the next letter is M. The numbers go 1, 3, 5, 7, so the next number is 9.

Q18. What comes next in the pattern: B2, E4, H6, K8, ?

1. N10
2. M10
3. O10
4. L10

Answer: N10

The letters follow a pattern of +3 positions: B, E, H, K, N. The numbers increase by 2: 2, 4, 6, 8, 10. So the next term is N10.

Q19. What comes next in the pattern: M2, K4, I6, G8, ?

1. E10
2. D10
3. F10
4. H10

Answer: E10

The letter pattern is M, K, I, G, which decreases by 2 alphabet positions each step. The number pattern is 2, 4, 6, 8, which increases by 2 each step. So the next term is E10.

Q20. What comes next in the sequence: A1, D3, G5, J7, ?

1. M9
2. K9
3. L9
4. N9

Answer: M9

The letters progress by 3 positions each time: A, D, G, J, M. The numbers increase by 2: 1, 3, 5, 7, 9. So the next term is M9.

Q21. Continue the pattern: Z2, X4, V6, T8, ?

1. Q10
2. R10
3. S10
4. P10

Answer: R10

The letters follow a reverse alphabetical pattern: Z, X, V, T, R. The numbers increase by 2: 2, 4, 6, 8, 10. So the next term is R10.

Q22. What comes next in the sequence: T2, R4, P6, N8, ?

1. L10
2. M10
3. K10
4. O10

Answer: L10

The letters go T, R, P, N, which are moving backward by 2 positions each time. The numbers go 2, 4, 6, 8, increasing by 2 each time. So the next term is L10.

Q23. What comes next in the sequence: C1, F3, I5, L7, ?

1. N9
2. O9
3. M9
4. P9

Answer: O9

The letters progress by +3 positions each time: C, F, I, L, so the next letter is O. The numbers form an arithmetic sequence of odd numbers: 1, 3, 5, 7, so the next number is 9.

Q24. What comes next in the sequence: D1, G3, J5, M7, ?

1. N9
2. P9
3. Q9
4. R9

Answer: P9

The letters progress by +3 positions each time: D, G, J, M, so the next letter is P. The numbers form an arithmetic sequence increasing by 2: 1, 3, 5, 7, so the next number is 9.