1. Choose the correct order of the given alternative : ab _ bbc _ c _ ab _ ab _ b
a) ccaac
b) cbabc
c) cacac
d) bccab
Explanation: The series is abc/b/bca/c/cab/a/abc/b.
2. Choose the correct order of the given alternative : m n o n o p q o p q r s _ _ _ _ _
a) mnopq
b) oqrst
c) pqrst
d) qrstu
Explanation: The series is mno/nopq/opqrs/pqrst.
3. Choose the correct order of the given alternative : _ bca _ cca _ ca _ b _ c
a) aaaaa
b) bbbab
c) aabaa
d) bbabb
Explanation: The series is bbca/bcca/bcaa/bbc.
4. Choose the correct order of the given alternative : ccbab _ caa _ bccc _ a _
a) babb
b) bbba
c) baab
d) babc
Explanation: The series is ccba/bbca/aabc/ccba/b.
5. Choose the correct order of the given alternative : b _ b _ bb _ _ bbb _ bb _ b
a) bbbbba
b) bbaaab
c) ababab
d) aabaab
Explanation: The series is babb/bbab/bbba/bbbb.. Thus, in each sequence, 'a' moves one step forward and 'b' takes its place and finally in the fourth sequence, it is eliminated.
6. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
ba _ cb _ b _ bab _
a) acbb
b) bacc
c) bcaa
d) cabb
Explanation: The series is babc/babc/babc. Thus, the pattern 'babc' is repeated.
7. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
_ bc _ ca _ aba _ c _ ca
a) abcbb
b) bbbec
c) bacba
d) abbec
Explanation: The series is abc/bca/cab/abc/bca, Thus, the letters change places in a cyclic order.
8. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
ab _ _ baa _ _ ab
a) aaaaa
b) aabaa
c) aabab
d) baabb
Explanation: The series is aba/aba/aba/aba. Thus, the pattern 'aba' is repeated.
9. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
ab _ aa _ bbb _ aaa _ bbba
a) abba
b) baab
c) aaab
d) abab
Explanation:The series is abb/aaabbb/aaaabbbb/a. Thus the letters are repeated twice, then thrice, then four times and so on.
10. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?
_ nmmn _ mmnn _ mnnm _
a) nmmn
b) mnnm
c) nnmm
d) nmnm
Explanation: The series is nnmm/nnmm/nnmm/nnmm. Thus, the pattern 'nnmm' is repeated.