Directions to Solve
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.
16.
ab _ aa _ bbb _ aaa _ bbba
A. abba B. baab
C. aaab D. abab
Answer & Explanation
Answer: Option B
Explanation:
The series is abb/aaabbb/aaaabbbb/a. Thus the letters are repeated twice, then thrice, then four times and so on.
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17.
_ nmmn _ mmnn _ mnnm _
A. nmmn B. mnnm
C. nnmm D. nmnm
Answer & Explanation
Answer: Option C
Explanation:
The series is nnmm/nnmn/nnmm/nnmm. Thus, the pattern ‘nnmm’ is repeated.
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18.
a _ n _ b _ _ ncb _ _ ncb
A. abbbec B. abebeb
C. bacbab D. bcabab
Answer & Explanation
Answer: Option D
Explanation:
The series is abncb/abncb/abncb. Thus, the pattern ‘abncb’ is repeated.
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19.
a _ ba _ b _ b _ a _ b
A. abaab B. abbab
C. aabba D. bbabb
Answer & Explanation
Answer: Option D
Explanation:
The series is abb/abb/abb/abb. Thus, the pattern ‘abb’ is repeated.
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20.
cccbb _ aa _ cc _ bbbaa _ c
A. aebe B. baca
C. baba D. acba
Answer & Explanation
Answer: Option B
Explanation:
The series is ccc bbb aaa/ccc bbb aaa/c. Thus, the pattern ccc bbb aaa is repeated.