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Reasoning Letter Series


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Letter series is easy to learn - You will enjoy it.

Letter series classified in three types:

  1. One lettered series
  2. Two lettered series
  3. Three lettered series

One lettered series

In One lettered series each term contains one letter and follows a certain pattern.

We have to find out the next term according to that pattern.

Example: What is the next letter in the series B, F, J, N, _______ ?
1) R
2) T
3) Q
4) S

Answer:1) R

Explanation:

B = 2, F = 6, J = 10, N = 14 . Here the difference between the letter is 4. So the answer is 14 + 4 = 18 which is R.

Example: What is the next letter in the series B, C, E, G, ______ ?
1) J
2) I
3) K
4) M

Answer:3) K

Explanation:

B = 2, C = 3, E = 5, G = 7 . Here the letters are consecutive primes. So the next prime number is 11 which is K.

Two lettered series

In Two lettered series each term contains two letter and follows a certain pattern.We have to find out the next term according to that pattern.

Example: What is the next letter in the series CM, DN, EO, FP, _______ ?
1) GR
2) GQ
3) HQ
4) HR

Answer:2) GQ

Explanation:

C = 3, D = 4, E = 5, F = 6 .
M = 13, N = 14, O = 15, P = 16 .
So next term is G = 7 and Q = 17 .

Three lettered series

In Three lettered series each term contains three letter and follows a certain pattern.We have to find out the next term according to that pattern.

Example: What is the next letter in the series CNL, BLI, AJF, ZHC, _______ ?
1) XDY
2) YFZ
3) YFA
4) XFY

Answer: 2) YFZ

Explanation:

C = 3, B = 2, A = 1, Z = 26 . ( Decreasing by 1 ) So next letter is 25, which is Y.
N = 14, L = 12, J = 10, H = 8 . ( Decreasing by 2 ) So next letter is 6, which is F.
L = 12, I = 9, F = 6, C = 3 . ( Decreasing by 3 ) So next letter is 26, which is Z.







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