100+ Letter Series Reasoning Questions and Answers - 1

Question: 1

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. Choose the correct alternative.
ab __ aa __ bbb __ aaa __ bbba

(A) abab

(B) abba

(C) aaab

(D) baab

Ans: D

The series is abb/aaabbb/aaaabbbb/a.
Thus, the letters are repeated twice, then thrice, then four times and so on.

Question: 2

__ bc __ __ bb __ aabc

(A) aacc

(B) abab

(C) babc

(D) acac

Ans: D

The series is abc/cab/bca/abc.

Question: 3

ccbab __ caa __ bccc __ a __

(A) babc

(B) babc

(C) bbba

(D) babb

Ans: D

The series is ccba/bbca/aabc/ccba/b.

Question: 4

__ bbca _ bcca __ ac __ a __ cb

(A) acbab

(B) bcaab

(C) bacab

(D) abcba

Ans: A

The series is abbc/ac/bcca/bc/caab/cb.

Question: 5

__ __ babbba __ a __ __

(A) babbb

(B) bbaba

(C) baaab

(D) ababb

Ans: A

The series is bababb/bababb.
Thus, the pattern bababb is repeated.

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