Letter Series


1.

TCFK, RADI, OXAF, JSVA, __

A. DMPU
B. DMOT
C. CMOT
D. CLOT

Option D

The given series is a mixed series. Pattern for the first letter:T-2, R-3, O-5, J-7, C Pattern for the second letter: C-2, A-3, X-5, S-7, L Pattern for the third letter:F-2, D-3, A-5, V-7, O Pattern for the fourth letter:K-2, I-3, F-5, A-7, T Hence, the next group in the series is CLOT.
 

2.

JTU, __, UCF, BFM, JHU

A. OYZ
B. JCZ
C. OCF
D. JCZ

Option A

The given series is a mixed series. Pattern for the first letter:J+5, O+6, U+7, B+8, J Pattern for the second letter:T+5, Y+4, C+3, F+2, H Pattern for the third letter:U+5, Z+6, F+7, M+8, U Hence, the missing group in OYZ

3.

QLR, JPD, RNU, GNC, SPX, DLB, __

A. ARE
B. AJA
C. BTU
D. TRA

Option D

The alternate groups are in different series.QLR, RNU, SPX are in one series. Pattern for the first letter:Q+1, R+1, S+1, T Pattern for the second letter:L+2, N+2, P+2, R Pattern for the third letter:R+3, U+3, X+3, A Hence, the next group in the series is TRA.
 

4.

EA, IE, OK, SO, YU, __

A. WX
B. WB
C. YD
D. CY

Option D

The given series is a mixed series. Pattern for the first letters:E+4, I+6, O+4, S+6, Y+4, C Pattern for the second letters:A+4, E+6, K+4, O+6, U+4, Y Hence, the next pair in series is CY.
 

5.

AI, EO, IU, __, UE

A. OU
B. OI
C. UA
D. OA

Option D

AI, EO, IU, __, UE The first letters in all the groups are consecutive vowels starting with A. The second letters in all the groups are consecutive vowels starting with I . Hence the missing pair is OA.
 

6.

G, J, N, Q, U, __

A. w
B. x
C. y
D. z

Option B

G+3, J+4, N+3, Q+4, U+3, __The next letter in the series is U + 3 = X.

7.

E, A __, O, I
 

A. E
B. U
C. X
D. V

Option B

E, A, __, O, I . The given series consists of vowels in decreasing order, starting with E. Hence, the missing letter is U.

8.

BCB, DED, FGF, HIH, ___

A. JKJ
B. HJH
C. IJI
D. JHJ

Option A

This series consists of a simple alphabetical order with the first two letters of all segments: B, C, D, E, F, G, H, I, J, K. The third letter of each segment is a repetition of the first letter.
 

9.

DEF, DEF2, DE2F2, _____, D2E2F3

A. DEF3
B. D3EF3
C. D2E3F
D. D2E2F2

Option D

In this series, the letters remain the same: DEF. The subscript numbers follow this series:
 1,1,1;  1,1,2;  1,2,2;  2,2,2;  2,2,3.
 

10.

P5QR, P4QS, P3QT, _____, PQV

A. PQW
B. PQV2
C. P2QU
D. PQ3U

Option C

The first two letters, PQ, are static. The third letter is in alphabetical order, beginning with R. The number series is in descending order beginning with 5.
 

11.

ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?
 

A. IBU
B. UT
C. UTI
D. BUT

Option C

At each step, 1, 2, 3, ... letters are removed from the beginning and the end alternatively.
 

12.

AYD, BVF, DRH, ?, KGL

A. FMI
B. GMJ
C. HLK
D. GLJ

Option D

The first letters move 1, 2, 3, 4, ... steps forward. The second letters move 3, 4, 5, 6, ... steps forward. The last letters are alternate.
 

13.

Z, U, Q, ?, L
 

A. I
B. K
C. M
D. N

Option D

The letters move 5, 4, 3, ... steps backward.
 

14.

FLP, INS, LPV, ?
 

A. ORY
B. UXZ
C. VXY
D. SVW

Option A

The first letter moves three steps forward. The second letter moves two steps forward. The third letter moves three steps forward.
 

15.

D-4, F-6, H-8, J-10, ?, ? 

A. K-12, M-13
B. L-12, M-14
C. L-12, N-14
D. K-12, M-14

Option C

The letters are alternate and the numbers indicate their position in the alphabet from the beginning.
 

16.

_ nmmn _ mmnn _ mnnm _
 

A. Nmmn
B. mnnm
C. nnmm
D. nmnm

Option C

The series is nnmm/nnmn/nnmm/nnmm. The pattern 'nnmm' is repeated.
 

17.

a _ ba _ b _ b _ a _ b
 

A. abaab
B. abbab
C. bbabb
D. aabba

Option C

The series is abb/abb/abb/abb. The pattern 'abb' is repeated.
 

18.

m _ nm _ n _ an _ a _ ma _
 

A. aamnan
B. ammanm
C. aammnn
D. amammn

Option C

The series is man/man/man/man/man. The pattern 'man' is repeated.

19.

KEL, LFM, MGN, NHO, OIP, _____

A. JPO
B. PJO
C. PJQ
D. None of these

Option C

This is an alternating series in alphabetical order. The middle letters follow the order EFGHIJ. The first and third letters are alphabetical beginning with K. The third letter is repeated as a first letter in each subsequent three-letter segment.
 

20.

DEF, DEF2, DE2F2, _____, D2E2F3

A. DEF3
B. D3EF3
C. D2E3F
D. D2E2F2

Option D

In this series, the letters remain the same: DEF.
The subscript numbers follow this series:
111, 112, 122, 222, 223, 233, 333, ...
 

21.

 QAR, RAS, SAT, TAU, _____

A. UAV
B. UAT
C. TAS
D. TAT

Option A

In this series, the third letter is repeated as the first letter of the next segment. The middle letter, A, remains static. The third letters are in alphabetical order, beginning with R.
 

22.

P5QR, P4QS, P3QT, _____, P1QV

A. PQW
B. PQV2
C. P2QU
D. PQ3U

Option C

The first two letters, PQ, are static. The third letter is in alphabetical order, beginning with R. The number series is in descending order beginning with 5.
 

23.

The first two letters, PQ, are static. The third letter is in alphabetical order, beginning with R. The number series is in descending order beginning with 5.

A. JKJ
B. HJH
C. IJI
D. JHJ

Option A

This series consists of a simple alphabetical order with the first two letters of all segments: B, C, D, E, F, G, H, I, J, K. The third letter of each segment is a repetition of the first letter.
 

24.

JAK, KBL, LCM, MDN, _____

A. OEP
B. NEO
C. MEN
D. PFQ

Option B

This is an alternating series in alphabetical order. The middle letters follow the order ABCDE. The first and third letters are alphabetical beginning with J. The third letter is repeated as a first letter in each subsequent three-letter segment.
 

25.

QPO, NML, KJI, _____, EDC
 

A. HGF
B. CAB
C. JKL
D. GHI

Option A

This series consists of letters in a reverse alphabetical order.
 

26.

ZA5, Y4B, XC6, W3D, _____

A. E7V
B. V2E
C. VE5
D. VE7

Option D

There are three series to look for here. The first letters are alphabetical in reverse: Z, Y, X, W, V. The second letters are in alphabetical order, beginning with A. The number series is as follows: 5, 4, 6, 3, 7.
 

27.

CMM, EOO, GQQ, _____, KUU

A. GRR
B. GSS
C. ISS
D. ITT

Option C

The first letters are in alphabetical order with a letter skipped in between each segment: C, E, G, I, K. The second and third letters are repeated; they are also in order with a skipped letter: M, O, Q, S, U.
 

28.

ELFA, GLHA, ILJA, _____, MLNA

A. OLPA
B. KLMA
C. LLMA
D. KLLA

Option D

The second and forth letters in the series, L and A, are static. The first and third letters consist of an alphabetical order beginning with the letter E.
 

29.

B2CD, _____, BCD4, B5CD, BC6D

A. B2C2D
B. BC3D
C. B2C3D
D. BCD7

Option B

Because the letters are the same, concentrate on the number series, which is a simple 2, 3, 4, 5, 6 series, and follows each letter in order.
 

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