Railway Exam 2021– Reasoning (Letter Series) Questions

Directions(Q. No 1 – 2) In each of the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it

1).a_bbc_aab_cca_bbcc

2).ab_aa_bbb_aaa_bbba

Directions(Q. No : 3 – 5) In each of the following questions, various term of a letter series are given with two term missing as shows by(?). Choose the missing term out of the given alternative.

3).Z, L, X, J, V, H, T, F, ?, ?

4).Z, S, W, O, T, K, Q, G, ?, ?

5).W, V, T, S, Q, P, N, M, ?, ?

6).How many B’s are there in the following letter – series, which are followed by G but G is not be followed by S?

BGSQBRNOBGNSQLTBGQTDBGUWXBGF

Directions (Q. 7 – 8) : Which one of the alternatives will replace the question mark(?)

7).MR, PO, SL, VI, ?

8).LOT, NNR, QMO, ULK, ?

9).In the following series which is the 8^th letter to the right of 16^thletter from your left ?

ABCDEFGHIJKLMNOPQRSTUVWXYZ

10).If first half of the following series is written in the reverse order, which will be the 5^th letter to the left of 13^th letter from your right ?

ABCDEFGHIJKLMNOPQRSTUVWXYZ

1).aa b b cc / a abb c c / aa b b c c  = acba

In the given series the pattern aabbcc is repeated

2).The letters are repeated twice, than thrice, then four times and so on.

a bb / a aa b b b /a a a ab b b b / a = baab

3).Z L X J V H T F ? ?

The given series consists of two series

 Z → X → V → T → H

  (-2)  (-2)  (-2)  (-2)

Similarly, L → J → H → F → D

4).Z S W OT K Q G ? ?

The given series is the combination of two series

Z → W → T → Q → N

  (-3)  (-3)  (-3)  (-3)

Similarly,

S → O → K → G → C

  (-4)  (-4)  (-4)  (-4)

5).W → V → T → S → Q → P → N → M → K → J

        (-1)   (-2)    (-1)   (-2)  (-1)   (-2)  (-1)  (-2)  (-1)

6).There are four number series OBG, TBG, DBG, XBG

7).M → P → S → V → Y

(+3)  (+3)  (+3)  (+3)

R → O → L → I → F

  (-3)  (-3)  (-3)  (-3)

8).L → N → Q → U → Z

     (+2)  (+3)  (+4)  (+5)

O → N → M → L → K

  (-1)  (-1)  (-1)  (-1)

T → R → O → K → F

 (-2)  (-3)  (-4)  (-5)

9).ABCDEFGHIJKLMNOPQRSTUVWXYZ

16^thletter from left is P and 8^th letter to the right of P is X.

10).MLKJIHGFEDCBANOPQRSTUVWXYZ

Thus, 13^th letter from right is N and 5^th letter to the left of N is E.