SSC Reasoning Free Practice Set: Series Completion (Set-2)

Series completion problems are comprised of a series of numbers or strings that follows certain rules and logics. You have to find out the logic behind them and use it to find out the required number. There will be 1-2 questions in every SSC exams.

In this article, we have prepared a set of 20 questions based on series completion with their respective answers. Go through them and check your answers for boosting the preparation in the upcoming SSC exams.

SSC Reasoning Free questions: Series Completion

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Direction: In each of the following questions a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives.

1) ba_ba_bac_acb_cbac

a.    aacb

b.    bbca

c.    ccba

d.    cbac

  2) m _ nm _ n _ an _ a _ ma _

a.    aamnan

b.    ammanm

c.    aammnn

d.    amammn

3) adb_ac_da_cddcb_dbc_cbda

a.    bccba

b.    cbbaa

c.    ccbba

d.    bbcad

4) bca_b_aabc _a_caa

a.    acab

b.    bcbb

c.    cbab

d.    ccab

5) a _ ba _ b _ b _ a _ b

a.    abaab

b.    abbab

c.    aabba

d.    bbabb

6) _ nmmn _ mmnn _ mnnm _

a.    nmmn

b.    mnnm

c.    nnmm

d.    nmnm

7) - bc - - b - aabc

a.    acac

b.    babc

c.    abab

d.    aacc

8) cccbb _ aa _ cc _ bbbaa _ c

a.    aebe

b.    baca

c.    baba

d.    acba

9) ab __ d __ aaba __ na _ badna _ b

a.    andaa

b.    babda

c.    badna

d.    dbanb

10) BAZ, DCY, FEX, ?

a.    FXW

b.    EFX

c.    FEY

d.    GHW

Directions (11-15): What will come in place of question mark (?) in the following number series?

11) 1, 7, 49, 343, (?)

a. 16807

b. 1227

c. 2058

d. 2401

12) 13, 20, 39, 78, 145, (?)

a. 234

b. 244

c. 236

d. 248

13) 12, 35 , 81 , 173 , 357 , (?)

a. 725

b. 715

c. 726

d. 736

14) 3, 100, 297, 594, 991, (?)

a. 1489

b. 1479

c. 1478

d. None of these

15) 112, 119, 140, 175, 224, (?)

a. 277

b. 276

c. 287

d. 266

Directions (16 -20): In the following number series only one number is wrong. Find out the wrong

number.

16) 18.3, 20.6 , 16, 22.9 , 13.7, 2.2, 11.4

a. 25.2

b. 18.3

c. 13.7

d. 22.9

17) 9 , 5 , 6 , 10.5 , 23 , 61, 183

a. 183

b. 10.5

c. 61

d. 5

18) 188, 154, 140, 132 ,128, 126 , 125

a. 125

b. 154

c. 132

d. 188

19) 2, 4 , 11 , 37 , 151 , 771 , 4633

a. 11

b. 4633

c. 771

d. 151

20) 391 , 394 , 399 , 411 , 431 , 461, 503

a. 503

b. 394

c. 399

d. 431

Answer Key