Aptitude Questions: Number Series Set 30

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

1. 61 82 124 187 ? 376
   A. 238
   B. 248
   C. 288
   D. 271
   E. None of these
   
   Answer & Explanation

   Answer – D. 271
   Explanation :
   61 + (1 * 21) = 82
   82 + (2 * 21) = 124
   124 + (3 * 21) = 187 …..
   
   
2. 23 30 46 80 141 ?
   A. 238
   B. 248
   C. 288
   D. 271
   E. None of these
   
   Answer & Explanation

   Answer – A. 238
   Explanation :
   30 – 23 = 7
   46 – 30 = 16
   80 – 46 = 34
   16 – 7 = 9
   34 – 16 = 18….
   
   
3. 1338 447 150 51 18
   A. 8
   B. 3
   C. 7
   D. 9
   E. None of these
   
   Answer & Explanation

   Answer – C. 7
   Explanation :
   1338 / 3 + 1 = 447
   447 / 3 + 1 = 150
   150 / 3 + 1 = 51 ….
   
   
4. 8 10 14.5 22.5 35 53 ?
   A. 33.8
   B. 34.5
   C. 54.25
   D. 77.5
   E. None of these
   
   Answer & Explanation

   Answer – D. 77.5
   Explanation :
   10 – 8 = 2
   14.5 – 10 = 4.5
   22.5 – 14.5 = 8
   4.5 – 2 = 2.5
   8 – 4.5 = 3.5….
   
   
5. 39 52 78 117 169 ?
   A. 246
   B. 148
   C. 188
   D. 234
   E. None of these
   
   Answer & Explanation

   Answer – D. 234
   Explanation :
   13 * 3 = 39
   13 * 4 = 52
   13 * 6 = 78
   13 * 9 = 117 ….
   
   
6. 16 24 ? 210 945 5197.5
   A. 30
   B. 40
   C. 80
   D. 90
   E. 60
   
   Answer & Explanation

   Answer – E. 60
   Explanation :
   16 * 1.5 = 24
   24 * 2.5 = 60
   
   
7. 9000 1795 355 68 ? 1.32
   A. 13.8
   B. 14.8
   C. 18.8
   D. 19.8
   E. None of these
   
   Answer & Explanation

   Answer – E. None of these
   Explanation :
   9000 / 5 – 5 = 1795
   1795 / 5 – 4 = 355
   355 / 5 – 3 = 68
   68 / 5 – 2 = 11.6
   
   
8. 17 9 ? 16.5 35 90
   A. 10
   B. 15
   C. 25
   D. 30
   E. None of these
   
   Answer & Explanation

   Answer – A. 10
   Explanation :
   17 * (1/2) + 0.5 = 9
   9 * (1) + 1 = 10
   
   
9. 5 3 6 ? 64.75
   A. 13.5
   B. 14.5
   C. 18.5
   D. 19.5
   E. None of these
   
   Answer & Explanation

   Answer – E. None of these
   Explanation :
   5 * 0.5 + 0.5 = 3
   3 * 1.5 + 1.5 = 6
   6 * 2.5 + 2.5 = 17.5
   
   
10. 6 13 38 ? 532 2675
    A. 138
    B. 129
    C. 123
    D. 164
    E. None of these
    
    Answer & Explanation

    Answer – B. 129
    Explanation :
    (6 * 1) + 7 = 13
    (13 * 2) + 12 = 38
    (38 * 3) + 15 = 129
    (129 * 4) + 16 = 532
    12 – 7 = 5
    15 – 12 = 3
    16 – 15 = 1
    5 – 3 = 2
    3 – 2 = 1…