# Alphabetical and Number Series Practice Quiz

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# Alphabetical and Number Series Practice Quiz

### Introduction

In verbal series, words, letters or digits are given in a specific sequence/order and we have find out next word, letter or digit to complete the given series. Numbers or alphabetical letters, are generally called terms of the series. The article Alphabetical and Number Series Practice Quiz provides information about Alphabetical and Number Series, a important topic of Reasoning Consists of different types Alphabetical and Number Series questions with solutions useful for candidates preparing for different competitive examinations like RRB .RRB ALP/Technical Exams/Junior Engineer Recruitment Exams, SSC CGL,SSC CHSL, IBPS, SBI PO, SBI Clerks, CAT and etc.

### Quiz

1. A, B, D, G, .....
A. L B. M C. J D. K

Explanation -
Pattern is [latex]^{1}{A}, ^{1}{A } + 1, ^{2}{B} + 2, ^{4}{D} + 3, ^{7}{G} + 4,.....[/latex]
i.e, Missing letter = K.
2. A, D, H, M, S .....
A. U B. V C. Y D. Z

Explanation -
Pattern is [latex]^{1}{A}, ^{1}{A} + 3, ^{4}{D} + 4, ^{8}{H} + 5, ^{13}{M} + 6, ^{19}{S} + 7.....[/latex]
i.e, Missing letter = Z.
3. X, U, R, O, L, .....
A. I B. J C. K D. L

Explanation -
Pattern is
[latex]^{24}{X}, ^{24}{X} - 3, ^{21}{U} - 3, ^{18}{R} - 3, ^{15}{O} - 3, ^{12}{L} - 3.....[/latex]
i.e, Missing letter = I.
4. R, M, ....., F, D, C
A. F B. G C. H D. I

Explanation -
Pattern is
[latex]^{18}{R}, ^{18}{R} - 5, ^{13}{M} - 4, ^{9}{I} - 3, ^{6}{F} - 2, ^{4}{D} - 1.....[/latex]
i.e, Missing letter = I.
5. AZ, BY, CX, DW, .......
A. EU B. EV C. EW D. FW

Explanation -
Pattern is [latex]^{1}{A}{Z}_{1}, ^{2}{B}{Y}_{2}, ^{3}{C}{X}_{3}, ^{4}{D}{W}_{4}, ^{5}{E}{V}_{5},.....[/latex]
i.e, Missing letter = EV
6. DF, GJ, KM, NQ, RT, .....
A. WV B. UX C. XZ D. YZ

Explanation -
Pattern is
[latex]^{4}{D}^{6}{F}, ^{7}{G}^{10}{J}, ^{11}{K}^{13}{M}, ^{14}{N}^{17}{Q}, ^{18}{R}^{20}{T}, ^{21}{U}^{24}{X}, ,.....[/latex]
i.e, Missing letter = UX.
7. ABZ, BCY, CDX, DEW, ......
A. EFV B. FEV C. DEF D. DEV

Explanation -
Pattern is
[latex]^{1}{A}^{2}{B}{Z}_{1}, ^{2}{B}^{3}{C}{Y}_{2}, ^{3}{C}^{4}{D}{X}_{3}, ^{4}{D}^{5}{E}{W}_{4}, ^{5}{E}^{6}{F}{V}_{5},.....[/latex]
i.e, Missing letter = EFV
8. NEQ, MGO, LIM, KKK, .....
A. PRI B. YAM C. AAJ D. JMI

Explanation -
Pattern is
[latex]^{14}{N}^{5}{E}^{17}{Q}, ^{13}{M}^{7}{G}^{15}{O}, ^{12}{L}^{9}{I}^{13}{M}, ^{11}{K}^{11}{K}^{11}{K}, ^{10}{J}^{13} {M}^{9}{I},.....[/latex]
i.e, Missing letter = JMI
9. AYD, BVF, DRH, ....., KGL
A. FMI B. GMJ C. HLK D. GLJ

Explanation -
Pattern is
[latex]^{1}{A} {Y}_{2} ^{4}{D}, ^{2}{B} {V}_{5} ^{6}{F}, ^{4}{D} {R}_{9} ^{8}{H}, ^{7}{G} {M}_{14} ^{10}{J}, ^{11}{K} {G}_{20} ^{12}{L},.....[/latex]
i.e, Missing letters = GMJ.
10. A, CD, GHI, ......, UVWXY
A. LMNO B. MNO C. NOPQ D. MNOP

Explanation -
Pattern is
[latex]^{1}{A}, ^{3}{C}^{4}{D}, ^{7}{G}^{8}{H}^{9}{I},^{13}{M}^{14}{N}^{15}{O}^{16}{P}, ^{21}{U}^{22}{V}^{23}{W}^{24}{X}^{25}{Y},.....[/latex]
i.e, Missing letter = MNOP.
11. DCBA, WXYZ, HGFE, STUV, LKJI, .....
A. OPQR B. MNOP C. NOPQ D. ONML

Explanation -
Pattern is
[latex]^{4}{D}^{3}{C}^{2}{B}^{1}{A}, {W}_{4}{X}_{3}{Y}_{2}{Z}_{1}, ^{8}{H}^{7}{G}^{6}{F}^{5}{E}, {S}_{8}{T}_{7}{U}_{6}{V}_{5}, ^{12}{L}^{11}{K}^{10}{J}^{9}{I}, {O}_{12}{P}_{11}{Q}_{10}{R}_{9},.....[/latex]
i.e, Missing letter = OPQR.
12. shg, rif, qje, pkd, .....
A. ole B. olc C. nmc D. nlb

Explanation -
Pattern is
[latex]{s}_{8}^{8}{h}^{7}{g}, {r}_{9}^{9}{i}^{6}{f}, {q}_{10}^{10}{j}^{5}{e}, {p}_{11}^{11}{k}^{4}{d}, {o}_{11}^{12}{l}^{3}{c},........ [/latex]
i.e, Missing letter = olc
13. ab __ ba __ b.a __
A. bab B. aba C. bbb D. abb

Explanation -
Pattern is ab/ab/ab/ab/ab.
14. abaa __ aab __ a __ a
A. abb B. aba C. bab D. aab

Explanation -
Pattern is aba/aba/aba/aba
15. aa __ b __ abb ____ bb
A. abaa B. bbaa C. baaa D. baba

Explanation -
Patter n is aa/bb/aa/bb/aa/bb
1. a __ ab __ baa __ bb __
A. baba B. abab C. aabb D. bbaa

Explanation -
Pattern is aaa/bbb/aaa/bbb.
2. abc __ bc __ c __
A. acbbab B. aabbca C. aabacb D. aababc

Explanation -
Pattern is abc/abc/abc/abc.
3. aabc ____ bca __ b __ a __ bc
A. aabca B. aacba C. aaaca D. abaac

Explanation -
Pattern is aa/bc/aa/bc/aa/bc/aa/bc.
4. a __ abbb __ ccccd __ ddccc __ bb __ ba
A. abcda B. abdbc C. abdcb D. abcad

Explanation -
pattern is aaa/bbbb/cccc/dddd/cccc/bbbb/a
5. adb __ ac __ da __ cddcb __ dbc __ cbda
A. bccba B. cbbaa C. ccbba D. bbcad

Explanation -
Here letters are equidistant from the begining and the end of series are the same.
6. b __ abbc __ bbca __ bcabb __ ab
A. acaa B. acba C. cabc D. cacc

Explanation -
Pattern is bcab/bcab/bcab/bacb/bcab.
7. ac __ cab __ baca __ aba __ acac
A. aacb B. acbc C. babb D. bcbb

Explanation -
Pattern s combination of two series acac and abab
acac/abab/acac/abab/acac
8. b __ b __ bb ____ bbb __ bb __ b
A. bbbbba B. bbaaab C. ababab D. aabaab

Explanation -
Pattern 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.
9. a __ bc __ c __ abb __ bca __
A. cccbc B. cbbac C. accba D. abbba

Explanation -
Pattern is aa/b/cccc/a/bbbb/c/aa.
10. 18, 21, 24, 27, .....
A. 32 B. 30 C. 31 D. 29

Explanation -
Pattern is a, a + d, a + 2d, .......
i.e. 18, 18 + 3, 21 + 3, 24 + 3, ......
i.e, Missing number = 27 + 3 = 30.
11. 885, 870, 855, 840, ......
A. 835 B. 855 C. 825 D. 815

Explanation -
Pattern is a, a – d, a – 2d, .....
i.e, Missing number = 840 – 15 = 825.
12. 3, 9, 27, 81, ......
A. 243 B. 324 C. 342 D. 432

Explanation -
Pattern is 3, 3 * 3, 9 * 3, 27 * 3, .......
i.e, Missing number = 81 * 3 = 243.
13. 1, 4, 9, 16, 25, ......
A. 35 B. 36 C. 38 D. 34

Explanation -
Pattern is [latex]{1}^{2}, {2}^{2}, {3}^{2}, {4}^{2}, {5}^{2},.....[/latex]
i.e, Missing number = [latex]{6}^{2}[/latex] = 36.
14. 216, 221, 231, 246, 266, ......
A. 289 B. 271 C. 281 D. 291

Explanation -
Pattern is + 5, + 10, + 15, + 20, ....
i.e, Missing number = 266 + 25 = 291.
15. 11, 16, 23, 32, 43, .....
A. 56 B. 55 C. 57 D. 54

Explanation -
Pattern is + 5, + 7, + 9, + 11, ....
i.e, Missing number = 43 + 13 = 56.
1. 1, 6, 15, 28, 45, ......
A. 56 B. 66 C. 57 D. 63

Explanation -
Pattern is + 5, + 9, ......, + 21, + 25
Missing number = 45 + 21 = 66.
2. 64, 144, 256, 400, .....
A. 529 B. 484 C. 676 D. 576

Explanation -
Pattern is [latex]{8}^{2}, {12}^{2}, {16}^{2}, {20}^{2},.....[/latex]
i.e, Missing number = [latex]{(20 + 4)}^{2}[/latex] = 576.
3. 2, 5, 10, 17, ......
A. 21 B. 26 C. 27 D. 29

Explanation -
Pattern is [latex]{1}^{2} + 1, {2}^{2} + 1, {3}^{2} + 1, {4}^{2} + 1,.....[/latex]
Missing number = [latex]{5}^{2} [/latex] + 1 = 26.
4. 2, 10, 30, 68, .....
A. 130 B. 140 C. 142 D. 138

Explanation -
Pattern is [latex]{1}^{3} + 1, {2}^{3} + 2, {3}^{3} + 3, {4}^{3} + 4,.....[/latex]
Missing number = [latex]{5}^{3} [/latex] + 1 = 130.
5. 31, 35, 43, 59, 91, ......
A. 135 B. 145 C. 155 D. 165

Explanation -
Pattern is + 4, + 8, + 16, + 32, ....
i.e. [latex]{2}^{2},+ {2}^{3},+ {2}^{4},+ {2}^{5},.....[/latex]
i.e, Missing number = 91 + [latex]{2}^{6}[/latex] = 91 + 64 = 155.
6. F – 1, G – 3, J – 5, O – 8, ......
A. W – 3 B. L – 14 C. U – 10 D. Z – 26

Explanation -
Pattern varies as
[latex] ^{6}{F} - 1, ^{6 + 1}{G} - 3, ^{7 + 3}{J} - 5, ^{10 + 5}{O} - 8, ^{15 + 8}{W} .....[/latex]
i.e. numerals represent the places which varies
7. D – 4, G – 7, I – 9, M – 13, ......
A. P – 14 B. O – 15 C. Q – 16 D. M – 17

Explanation -
In the given series, all the alphabets with their positions.
8. B – 3, D – 6, F – 9, H – 12, ......
A. L – 14 B. M – 13 C. J – 15 D. I – 9

Explanation -
Pattern is combination of two series
[latex]^{2}{B}, ^{4}{D} , ^{6}{F}, ^{8}{H}, ^{10}{J},.....[/latex] and 3, 6, 9, 12, 15, .......
9. 3F, 6G, 111, 18L, ......
A. 210 B. 25N C. 27P D. 27Q

Explanation -
Pattern is combination of two series
3, 6, 11, 18, 27, ..... and [latex]^{6}{F}, ^{7}{G} , ^{9}{I}, ^{12}{L}, ^{16}{P}, .....[/latex]
i.e, Missing term = 27 P.
10. [latex]{C}_{3},{H}_{8},{O}_{15},.....[/latex]
A. [latex]{X}_{24}[/latex] B. [latex]{I}_{35}[/latex] C. [latex]{T}_{26}[/latex] D. [latex]{J}_{35}[/latex]

Explanation -
Letters with their positions
11. Q – 49, P – 36, O – 25, N – 16, .....
A. N – 9 B. M – 9 C. L – 9 D. K – 9

Explanation -
Pattern varies as
Q, P, O, N, M, ........ and 49, 36, 25, 16, 9, 4, ......
12. B2D, E3H, I4M, ......
A. N5R B. N5S C. N5Q D. N5T

Explanation -
Numeral indicates the places between letters.
13. A1E, F4J , K9O, .......
A. Q4U B. W1X C. P16T D. T2V

Explanation -
Pattern is combination of two series
[latex]^{1}{A}^{5}{E},^{6}{F}^{10}{J}, ^{11}{K}^{15}{0},^{16}{P}^{20}{T},.....[/latex] and 1, 4, 9,16, ......
14. C4X, F9U, I16R, .....
A. K25P B. L25P C. L25O D. L27P