Some numbers are arranged in a particular rule or order or logic then those Numbers are in Series.Based on various type of Question asked in different competitive Exams.We divided the Series into Three types.
1.Numbers series
2.Letter Series
3.Repeated Series
*TYPES OF SERIES:-
Natural Numbers:- 1,2,3,4…..........
Even numbers:2,4,6,8,10……..........
Odd numbers:1,3,5,7,9,11……........
Prime numbers:2,3,5,7,11,13,……..
*Increasing Series:
(a)Addition Series
(b)Product Series
*Decreasing Series
(a)Sub traction Series
(b)Division Series
*Square Series(n)2
*Cube Series(n)3
COMBINATION SERIES:-
n2+1, n2-1, n3+1, n3-1, n2+n, n2-n, n3+n, n3-n, ×n+1, ×n-1, ×n+n, ×n-n, n3+n2, n3-n2-------etc
In present exams, two models of number series are given.
I. Missing term:- In this series one term will be missing. Based on the logic of the other we have to find out the missing term.
II. Wrong number:- In this series.one term will be given wrong. We have to find out that wrong number
Some practice Questions:
1. 7,9,15,27, ?
A)74
B)47
C)63
D)59
E)None of these
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2. 63, 64.8, 67, 69.6 , ?
A)91.4
B)81.2
C)72.6
D)76.3
E)None of these
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3. 19, 36, 70, 121, ?
A)234
B)197
C)213
D)189
E)None of these
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4. 121, 120, 116, 107, 91, ?
A)73
B)45
C)53
D)66
E)None of these
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5. 213, 217, 210, 214, 207, 211, ?
A)215
B)245
C)204
D)323
E)None of these
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6. 816, 812, 404, 1200, 299, ?
A)1324
B)1475
C)1275
D)1534
E)None of these
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7. 124, 120.5, 113.5, 103, 89, ?
A)78.4
B)65.4
C)71.5
D)81.5
E)None of these
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8. 725, 724, 716, 689, 625, ?
A)750
B)528
C)465
D)500
E)None of these
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9. 17, 22.5, 50.5, 157, 633.5, ?
A)3173
B)2345
C)1347
D)2457
E)None of these
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10. 2, 13, 35, 79, 167, ?
A)416
B)343
C)321
D)257
E)None of these
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11. 63, 66, 138, 423, 170434, a, b, c, d…Find the value of C
A)327
B)80
C)249
D)256
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12. 173, 86.5, 216.25, 72.08,252.3234,p,q,r,s,t… Find the value of Q
A)237.8
B)292.5
C)342.9
D)126.8
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13. 564, 221, 437, 312…1234,m,n,o,p…..Find the value of O
A)876
B)956
C)1029
D)918
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14. 132,182,240, 306,992,a,b,c,d…..Find the value of c
A)1879
B)1290
C)1450
D)1260
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15. 987, 207.4, 2069, 423.8…….145, l, k, j…..Find the value of l
A)45
B)39
C)289
D)165
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16. 5, 7.5, 22.5, 101.25, 93,a,b,c,d……..Find the value of d
A)1289.6
B)1578.5
C)1987.6
D)1883.25
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17. 216, 215,214,210,202, 63,r,s,t,u,….Find the value of U
A)83
B)90
C)49
D)57
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18. 7,7,14,42,126,252,252, 123,u,v,w,x,y,z….Find the value of x
A)2865
B)1654
C)3245
D)2214
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19. 147,153,165,189,237, 652,a,b,c,d…….find the value of d
A)954
B)742
C)987
D)876
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20. 754,564,190,543,327,216, 189,a,78,145,65,b…………find the value of a
A)111
B)123
C)134
D)254
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Directions(21-30) : In these questions, a number series is given. Find out the missing number
21. 13, 7, 6, 14, 52, ?
A. 482
B. 476
C. 466
D. 424
E. 460
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22. 139, 142, 133, 160, 79,?
A. 326
B. 322
C. 331
D. 340
E. 355
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23. 10, 16, 27, 48, 84, ?
A. 138
B. 153
C. 166
D. 140
E. 135
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24. 66, 77, 63, 73, 60, ?
A. 66
B. 69
C. 61
D. 64
E. 63
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25. 16, 9, 8, 13, 25, ?
A. 64.5
B. 59.5
C. 63.5
D. 68.5
E. 61.5
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26. 11, 12, 22, 69, 272 ?
A. 1365
B. 1368
C. 1324
D. 1325
E. 1329
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27. 11, 13, 16, 33, 96, ?
A. 358
B. 354
C. 386
D. 366
E. 353
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28. 4, 21, 120, 595, 2376 ?
A. 7125
B. 7035
C. 7085
D. 7055
E. 7115
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29. 64, 66, 75, 103, 168, ?
A. 282
B. 294
C. 286
D. 295
E. 288
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30. 13, 25, 39, 57, 83, ?
A. 122
B. 124
C. 126
D. 120
E. 125
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Directions(31-40): In these questions, a number series is given. Only one number is wrong which does not fit in the series. Find out the wrong number.
31. 34, 40, 57, 86, 128, 185, 255
1. 40
2. 128
3. 57
4. 185
5. None of these
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32. 8, 12, 23, 73, 297, 1491, 8953
1. 8952
2. 8
3. 298
4. 10
5. None of these
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33. 7, 4, 5, 9, 21, 52.5, 160.5
1. 160.5
2. 5
3. 21
4. 7
5. None of these
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1. 21
2. 14
3. 30
4. 2045
5. None of these
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35. 434, 418, 393, 357, 308, 244, 153
1. 357
2. 393
3. 418
4. 153
5. None of these
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36. 8, 19, 42, 74, 118, 173, 239
1. 42
2. 239
3. 19
4. 8
5.None of these
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37. 40, 45, 60, 75, 120, 165, 220
1. 60
2. 40
3. 75
4. 165
5.None of these
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38. 960 953 939 918 890 855 810
1. 960
2. 953
3. 855
4. 939
5. None of these
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39. 972 484 240 118 57 26 11.25
1. 240
2. 130
3. 57
4. 26
5. None of these
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40. 5 6 16 57 240 1245 7506
1. 5
2. 57
3. 240
4. 7
5. None of these
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