Alphabetical series for SSC CGL Exam

Directions (1-3): 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.

Q1. a b _ b b c _ c _ a b _ a b _ b
(a) ccaac
(b) cbabc
(c) cacac
(d) bccab

Q2. _ a _ b _ a b a a _ b a b _ a b b 
(a) aaabb
(b) ababb
(c) babab
(d) babba

Q3. c _ b a a _ a c a _ c a c a b _ a c a c _ b c a
(a) acbaa
(b) bbcaa
(c) bccab
(d) cbaac

Q4. Find the term which does not fit into the series:
1CV, 5FU, 9IT, 15LS, 17OR
(a) 5FU
(b) 15LS
(c) 9IT
(d) 17OR

Directions (5-15): In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

Q5. KM5, IP8, GS11, EV14, ?
(a) BX17
(b) BY17
(c) CY17
(d) CY18

(a) ENL
(b) ENK
(c) EJM
(d) VNU

Q7. GH, JL, NQ, SW, YD, ?
(a) EJ
(b) FJ
(c) EL
(d) FL

Q8. Z, W, S, P, L, I, E, ?
(a) B
(b) D
(c) F
(d) K

Q9. ejo,   tyd,   ins,   xch,   ?
(a) nrw
(b) mrw
(c) msx
(d) nsx

Q10. Z, ?, T, ?, N, ?, H, ?, B
(a) W, Q, K, E
(b) W, R, K, E
(c) X, Q, K, E
(d) X, R, K, E

Q11. A, B, N, C, D, O, E, F, P, ?, ?, ?
(a) G, H, I
(b) G, H, J
(c) G, H, Q
(d) J, K, L

(c) PINE
(d) INES

Q13. Z, S, W, O, T, K, Q, G, ?, ?
(a) N, C
(b) N, D
(c) O, C
(d) O, D

Q14. A, C, F, J, ?, ?
(a) L, P
(b) M, O
(c) O, U
(d) R, V

Q15. AC, FH, KM, PR, ?
(a) UW
(b) VW
(c) UX
(d) TV


S1. Ans.(c)
Sol. The series is abc/b/bca/c/cab/a/abc/b.

S2. Ans.(d)
Sol. The series is baa/bba/baa/bba/baa/bb. 
Thus, the pattern baa/bba is repeated.

S3. Ans.(a)
Sol. The series is cab/aa/cacab/cacab/aa/cacab/ca.
Thus, the pattern ‘cacab/cacab/aa’ is repeated.

S9. Ans.(b)

Sol. There is a gap of four letters between the first and second, the second and third letters of each term, and also between the last letter of a term and the first letter of the next term.

S11. Ans.(c)
Sol. The given series may be divided into 2 groups:
I. A, B, C, D, E, F, ?, ? 
and II. N, O, P, ?
Clearly, the given series consists of two terms of I followed by one term of II.
The missing terms in I are G and H while the missing term in II is Q.

S12. Ans.(b)
Sol. One letter from the beginning and one from the end of a term are removed, one by one, in alternate steps.

S15. Ans.(a)


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