Aptitude Questions: Number Series Set 43

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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. 84, 72, 66, ?, 68.17
   1.65
   2.60
   3.67
   4.76
   5.None of these
   
   Answer & Explanation

   Answer – 1.65
   Explanation :
   84/1.2 = 70+2 = 72
   72/1.2= 60+6 = 66
   66/1.2 = 55+10 = 65
   65/1.2 = 54.17+14 = 68.17
   
   
   
2. 110, ?, 42, 20, 6
   1.63
   2.81
   3.72
   4.90
   5.None of these
   
   Answer & Explanation

   Answer – 3.72
   Explanation :
   11² – 11 = 110
   9² – 9 = 72
   7² – 7 = 42
   5² – 5 = 20
   3² – 3 = 6
   
   
   
3. 164, 40, ?, 43, 188
   1.224
   2.68
   3.90
   4.176
   5.None of these
   
   Answer & Explanation

   Answer – 4.176
   Explanation :
   164 -4 = 160/4 = 40
   40+4 = 44*4 = 176
   176-4 = 172/4 = 43
   43+4 = 47*4 = 188
   188-4 = 184/4 = 46
   
   
   
4. 96, 320, 800, 1600, ?
   1.640
   2.2666.7
   3.2500
   4.2400
   5.None of these
   
   Answer & Explanation

   Answer – 2.2666.7
   Explanation :
   96/0.3 = 320
   320/0.4 = 800
   800/0.5 = 1600
   1600/0.6 = 2666.7
   
   
   
5. 434, 418, 393, ?, 308, 244
   1.357
   2.346
   3.325
   4.254
   5.None of these
   
   Answer & Explanation

   Answer – 1.357
   Explanation :
   434 – 4² = 418
   18 – 5² = 393
   393 – 6² = 357
   357- 7² =308
   308- 8² = 244
   
   
   
6. 8, 64, ?, 206, 292, 388
   1.412
   2.342
   3.130
   4.224
   5.None of these
   
   Answer & Explanation

   Answer – 3.130
   Explanation :
   8 + 56 = 64
   64 + 66 = 130
   130+76 = 206
   206+86 = 292
   292+96 = 388
   
   
   
7. ?, 510, 495, 475, 450, 420
   1.680
   2.480
   3.500
   4.520
   5.None of these
   
   Answer & Explanation

   Answer – 4.520
   Explanation :
   520-(10*1) = 510
   510 – (10*1.5) = 495
   495 –(10*2) = 475
   475 – (10*2.5) = 450
   450 –(10*3) = 420
   
   
   
8. 43, 214, 852, ?
   1.2529
   2.1245
   3.3214
   4.2650
   5.None of these
   
   Answer & Explanation

   Answer – 1.2529
   Explanation :
   43 *5 – 1^1 = 214
   214*4 – 2^2 = 852
   852*3 – 3^3 = 2529
   
   
   
9. 332, 370, 410, ?, 496
   1.564
   2.452
   3.326
   4.210
   5.None of these
   
   Answer & Explanation

   Answer – 2.452
   Explanation :
   18^2 = 324 + 8 = 332
   19^2 = 361+9 = 370
   20^2 = 400+10 = 410
   21^2 = 441+11 = 452
   22^2 = 484+12 = 496
   
   
   
10. 1224, 1134, 954, 684, ?
    1.324
    2.416
    3.560
    4.214
    5.None of these
    
    Answer & Explanation

    Answer – 1.324
    Explanation :
    1224 – 90 = 1134
    1134 – 180 = 954
    954 – 270 = 684
    684 – 360 = 324