Quantitative Aptitude: Number Series Set 97

Directions(1-10): Find the missing term '?' of the following series.

1. 50, 60, 75, 97.5, ?, 184.275, 267.19875
   124.124
   102.110
   131.625
   130.124
   125.125
   Option C
   50 × 1.20 = 60 60 × 1.25 = 75 75 × 1.30 = 97.5 97.5 × 1.35 = 131.625 131.625 × 1.40 = 184.275
   
    



2. 17, 9, ?, 16.5, 35, 90
   8
   4
   10
   7
   6
   Option C
   (×0.5 + 0.5), (×1 + 1), (×1.5 + 1.5), (×2 + 2) = 9 × 1 + 1 = 10
   
    



3. 6, 13, 38, ?, 532, 2675
   555
   532
   520
   500
   545
   Option B
   6 × 1 + 1 × 7 = 13 13 × 2 + 2 × 6 = 38 38 × 3 + 3 × 5 = 129 129 × 4 + 4 × 4 = 532
   
    



4. 3, 22, ?, 673, 2696, 8093
   120
   129
   125
   130
   134
   Option E
   ×7 + 1, ×6 + 2, ×5 + 3, ×4 + 4, ×3 + 5…. = 22 × 6 + 2 = 134
   
    



5. 17, 52, 158, 477, ?, 4310
   1245
   1223
   1330
   1435
   1254
   Option D
   ×3 + 1, ×3 + 2, ×3 + 3… = 477 × 3 + 4 = 1431 + 4 = 1435
   
    



6. 286 ,142, ?, 34, 16, 7
   60
   65
   78
   70
   68
   Option D
   (/ 2 – 1), (/ 2 – 1), (/2 – 1)… 142/2 – 1 = 71 –1 = 70
   
    



7. 12, 15 , 36, ?, 480, 2415, 14508
   100
   110
   125
   117
   120
   Option D
   12 × 1 + 3 × 1 = 15 15 × 2 + 3 × 2 = 36 36 × 3 + 3 × 3 = 117 117 × 4 + 3 × 4 = 480 480 × 5 + 3 × 5 = 2415
   
    



8. 1, 2, 6, 21, 88, 445, ?
   2002
   2250
   2345
   2676
   2400
   Option D
   1 × 1 + 1 = 2 2 × 2 + 2 = 6 6 × 3 + 3 = 21 21 × 4 + 4 = 88 88 × 5 + 5 = 445 445 × 6 + 6 = 2676
   
    



9. 20, 21, 25, 34, 50, ?, 111
   88
   90
   62
   60
   75
   Option E
   20 + 1^2 = 21 21 + 2^2 = 25 25 + 3^2 = 34 34 + 4^2 = 50 50 + 5^2 = 75
   
    



10. 600, 125, 30, ?, 7.2, 6.44, 6.288
    10
    11
    8
    9
    6
    Option B
    600 /5 + 5 = 125 125 /5 + 5 = 30 𝟑𝟎/ 𝟓 + 5 = 11 11/ 5 + 5 = 7.2