Aptitude Questions: Number Series Set 27

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 !!!

Bank PO Level Questions :-

1. 8 10 18 44 124 ?
   A. 364
   B. 366
   C. 362
   D. 361
   E. None of these
   
   Answer & Explanation

   Answer – B. 366
   Explanation :
   8 + 2 = 10
   10 + 8(= 3 * 2 + 2) = 18
   18 + 26(= 3 * 8 + 2) = 44
   44 + 80(= 3 * 26 + 2) = 124
   124 + 242(= 3 * 80 + 2) = 366
   
   
   
2. 13 25 61 121 205 ?
   A. 310
   B. 312
   C. 314
   D. 313
   E. None of these
   
   Answer & Explanation

   Answer – D. 313
   Explanation :
   13 + (1 * 12) = 13 + 12 = 25
   25 + (3 * 12) = 25 + 36 = 61
   61 + (5 * 12) = 61 + 60 = 121
   121 + (7 * 12) = 121 + 84 = 205
   205 + (9 * 12) = 205 + 108 = 313
   
   
   
3. 12 18 36 102 360 ?
   A. 1186
   B. 1286
   C. 1386
   D. 1486
   E. None of these
   
   Answer & Explanation

   Answer – C. 1386
   Explanation :
   (12 * 4) – 30 = 48 – 30 = 18
   (18 * 4) – 36 = 72 – 36 = 36
   (36 * 4) – 42 = 144 – 42 = 102
   (102 * 4) – 48 = 408 – 48 = 360
   (360 * 4) – 54 = 1440 – 54 = 1386
   
   
   
4. 13 21 36 58 87 ?
   A. 133
   B. 123
   C. 143
   D. 113
   E. None of these
   
   Answer & Explanation

   Answer – B. 123
   Explanation :
   13 + 8 = 21
   21 + 8 + 7 = 21 + 15 = 36
   36 + 15 + 7 = 36 + 22 = 58
   58 + 22 + 7 = 58 + 29 = 87
   87 + 29 + 7 = 87 + 36 = 123
   
   
   
5. 5 7 13 25 45 ?
   A. 78
   B. 70
   C. 65
   D. 55
   E. None of these
   
   Answer & Explanation

   Answer – E. None of these
   Explanation :
   5 + 1 * 2 = 7
   7 + 2 * 3 = 13
   13 + 3 * 4 = 25
   25 + 4 * 5 = 45
   45 + 5 * 6 = 75
   
   
   
6. 13 16 22 33 51 ?
   A. 72
   B. 74
   C. 70
   D. 76
   E. None of these
   
   Answer & Explanation

   Answer – E. None of these
   Explanation :
   13 + 3 = 16
   13 + 3 + 3 = 22
   22 + 6 + 5 = 33
   33 + 11 + 7 = 51
   51 + 18 + 9 = 78
   
   
   
7. 435 354 282 219 165 ?
   A. 112
   B. 109
   C. 110
   D. 120
   E. None of these
   
   Answer & Explanation

   Answer – D. 120
   Explanation :
   435 – (9*9) = 354
   354 – (9*8) = 282
   282 – (9*7) = 219
   219 – (9*6) = 165
   165 – (9*5) = 120
   
   
   
8. 27 38 71 126 203 ?
   A. 312
   B. 305
   C. 302
   D. 315
   E. None of these
   
   Answer & Explanation

   Answer – C. 302
   Explanation :
   27 + 11 = 38
   38 + 33 = 71
   71 + 55 = 126
   126 + 77 = 203
   203 + 99 = 302
   
   
   
9. 4 11 25 53 109 ?
   A. 221
   B. 224
   C. 220
   D. 223
   E. None of these
   
   Answer & Explanation

   Answer – A. 221
   Explanation :
   4 + (1 * 7) = 11
   11 + (2 * 7) = 25
   25 + (4 * 7) = 53
   53 + (8 * 7) = 109
   109 + (16 * 7) = 221
   
   
   
10. 33 43 65 99 145 ?
    A. 103
    B. 209
    C. 203
    D. 109
    E. None of these
    
    Answer & Explanation

    Answer – C. 203
    Explanation :
    33 + 10 = 43
    43 + (10 + 12) = 65
    65 + (10 + 24) = 99
    99 + (10 + 36) = 145
    145 + (10 + 48) = 203