Aptitude Questions: Number Series Set 34

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 !!!

Directions(1-10) : 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.

1. 5 14 46 165 ? 3525
   A. 716
   B. 736
   C. 746
   D. 696
   E. None of these
   
   Answer & Explanation

   Answer – D. 696
   Explanation :
   (5 * 1) + (1 * 9) = 14
   (14 * 2) + (2 * 9) = 46…..
   
   
2. 3 2 3 6 14 ? 116
   A. 37.5
   B. 47.5
   C. 43.6
   D. 36.8
   E. None of these
   
   Answer & Explanation

   Answer – A. 37.5
   Explanation :
   3 * 0.5 + 0.5 = 2
   2 * 1 + 1 = 3
   3 * 1.5 + 1.5 = 6…..
   
   
3. 3 8 27 76 ? 696 2099
   A. 245
   B. 235
   C. 275
   D. 255
   E. None of these
   
   Answer & Explanation

   Answer – B. 235
   Explanation :
   3 * 3 – 1 = 8
   8 * 3 + 3 = 27
   27 * 3 – 5 = 76…..
   
   
4. 972 488 242 123 ? 31.75 13.875
   A. 54.5
   B. 69.5
   C. 87.5
   D. 59.5
   E. None of these
   
   Answer & Explanation

   Answer – D. 59.5
   Explanation :
   972 / 2 + 2 = 488
   488 / 2 – 2 = 242
   242 / 2 + 2 = 123…..
   
   
5. 5 293 437 ? 545 563 572
   A. 457
   B. 592
   C. 509
   D. 529
   E. None of these
   
   Answer & Explanation

   Answer – C. 509
   Explanation :
   5 + 9 * 32 = 293
   293 + 9 * 16 = 437
   437 + 9 * 8 = 509….
   
   
6. 5 12 40 ? 212 387 639
   A. 123
   B. 103
   C. 153
   D. 113
   E. None of these
   
   Answer & Explanation

   Answer – B. 103
   Explanation :
   5 + 7 * 1² = 12
   12 + 7 * 2² = 40
   40 + 7 * 3² = 103…..
   
   
7. 717 522 335 ? 121 66 
   A. 222
   B. 232
   C. 242
   D. 252
   E. None of these
   
   Answer & Explanation

   Answer – A. 222
   Explanation :
   9³ – 12 = 717
   8³ + 10 = 522
   7³ – 8 = 335……
   
   
8. 2394, 1290, 620, 252, 78, ?
   A. 10
   B. 12
   C. 14
   D. 18
   E. None of these
   
   Answer & Explanation

   Answer – C. 14
   Explanation :
   7^4 – 7, 6^4 – 6, 5^4 – 5, 4^4 – 4…
   
   
9. 15 25 34 ? 464 2330 13980
   A. 240
   B. 420
   C. 150
   D. 120
   E. None of these
   
   Answer & Explanation

   Answer – D. 120
   Explanation :
   (15 * 1 ) + (1 * 10) = 25
   (25 * 2 ) – (2 * 8) = 34
   (34 * 3 ) + (3 * 6) = 120
   (120 * 4) – (4 * 4) = 464
   (464 * 5) + (5 * 2) = 2330
   (2330 * 6) – (6 * 0) = 13980
   
   
10. 2580 2582 5160 15486 61936 ?  
    A. 309690
    B. 409670
    C. 509670
    D. 209670
    E. None of these
    
    Answer & Explanation

    Answer – A. 309690
    Explanation :
    2580 * 1 + 2= 2582
    2582 * 2 – 4 = 5160
    5160 * 3 + 6 = 15486
    15486 * 4 – 8 = 61936 …..