Practice Series completion - verbal reasoning Online Quiz (set-2) For All Competitive Exams

Directions:
In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.

Q-1)   Consider the following series : ABCD ….. XYZ, YX ….. BA,  BCD ….. YZ, YX ….. CBA, BC ….. YZ ….. Which letter occupies the 1000th position in the above series?

(a)

(b)

(c)

(d)

Explanation:

We have 3 patterns :

I. ABCD ….. XYZ, which occurs only once.

II. YX ….. BA, which repeats alternately.

III. BC ….. YZ, which repeats alternately.

Now, I has 26 terms.

So, number of terms before the desired term = (999 - 26) = 973.

Each of the patterns which occurs after

I, has 25 letters. Now, 973 + 25 gives quotient = 38 and remainder = 23.

Thus, the 1000th term of the given series is the 24th term of the 39th pattern after I.

Clearly, the 39th pattern is II and its 24th term is B.


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

Q-2)   2, A, 9, B, 6, C, 13, D, ?

(a)

(b)

(c)

(d)


Directions:
In the following series, replace the question mark (?) with the suitable option.

Q-3)   6, 9, 12, 15, 18, ?

(a)

(b)

(c)

(d)


Directions:
In the following series, replace the question mark (?) with the suitable option.

Q-4)   7, 9, 13, 21, 37, ?

(a)

(b)

(c)

(d)


Directions:
In the following series, replace the question mark (?) with the suitable option.

Q-5)   14, 21, 30, 41, 54, ?

(a)

(b)

(c)

(d)


Directions:
What comes in place of question mark (s) in the following letter series?

Q-6)   s n ? V ? H ? F E B b B

(a)

(b)

(c)

(d)


Directions:
In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.

Q-7)   BZA, DYC, FXE, ?, JVI

(a)

(b)

(c)

(d)

(e)


Directions:
In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.

Q-8)   WFB, TGD, QHG, ?

(a)

(b)

(c)

(d)

(e)


Directions:
In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.

Q-9)   UPI, ?, ODP, MBQ, IAW

(a)

(b)

(c)

(d)

(e)


Directions:
In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.

Q-10)   ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?

(a)

(b)

(c)

(d)

(e)

Explanation:

In the first step, one letter from the beginning and one from the end of a term are removed to give the next term.

In the second step, two letters from the beginning of a term are removed.

These two steps are repeated alternately.


Directions:
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.

Q-11)   ba _ cb _ b _ bab _

(a)

(b)

(c)

(d)

Explanation:

The series is babc/babc/babc.

Thus, the pattern 'babc' is repeated.


Directions:
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.

Q-12)   bca _ b _ aabc _ a _ caa

(a)

(b)

(c)

(d)

Explanation:

The series is bcaa/bcaa/bcaa/bcaa.

Thus, the pattern 'bcaa' is repeated.


Directions:
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.

Q-13)   ab _ aa _ bbb _ aaa _ bbba

(a)

(b)

(c)

(d)

Explanation:

The series is abb/aaabbb/aaaabbbb/a.

Thus the letters are repeated twice, then thrice, then four times, and so on.


Directions:
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.

Q-14)   _ acca _ ccca _ acccc _ aaa

(a)

(b)

(c)

(d)

Explanation:

The series is ca/ccaa/cccaaa/ccccaaaa.


Directions:
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.

Q-15)   ab _ bcbca _ _ c _ bab

(a)

(b)

(c)

(d)

Explanation:

The series is abcbc/bcaca/cabab.

Thus, the series consists of three sequences. The first sequence begins with a, the second with b, and the third with c. Each sequence consists of a letter followed by the pair of other two letters repeated twice.


Directions:
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.

Q-16)   _ op _ mo _ n _ _ pnmop _

(a)

(b)

(c)

(d)

Explanation:

The series is mopn/mopn/mopn/mopn.

Thus, the pattern 'mopn' is repeated.


Directions:
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.

Q-17)   _ c _ bd _ cbcda _ a _ db _ a

(a)

(b)

(c)

(d)

Explanation:

The series is acdb/dacb/cdab/acdb/da.

Clearly, each group of four letters contains the letters of the previous group in the order - third, first, second, and fourth.


Directions:
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.

Q-18)   a _ bc _ a _ bcda _ ccd _ bcd _

(a)

(b)

(c)

(d)

Explanation:

The series is aabcd/abbcd/abccd/abcdd.


Directions:
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. Select the correct alternative.

Q-19)   _b_baaabb_a_ _bb_a_

(a)

(b)

(c)

(d)

Explanation:

abb/baa/abb/baa/abb/baa

Therefore, Required answer = abbaaba


Directions:
What should come in the place of question mark (?) in the following alpha - numeric series?

Q-20)   AB 11 CD, EF 13 GH, IJ 17 KL, ?

(a)

(b)

(c)

(d)