Aptitude Questions – Number Series Set 62

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1. 2, 3, 6, 14, ?, 115.5
   1. 52.5
   2. 47.5
   3. 67.5
   4. 37.5
   5. 27.5
   
   Answer & Explanation

   Answer – 4. 37.5
   Explanation :
   2 * 1 + 1 = 3
   3 * 1.5 + 1.5= 6
   6 * 2 + 2 = 14
   14 * 2.5 + 2.5 = 37.5
   37.5 * 3 + 3 = 115.5
   
   
2. 12 13 28 85 ? 1711
   1.354
   2.342
   3.294
   4.234
   5.244
   
   Answer & Explanation

   Answer – 2.342
   Explanation :
   12*1 – 1 + 2 = 13
   13*2 – 2 + 4 = 28
   28*3 – 1 + 2 = 85
   85*4 – 2 + 4 = 342
   342*5 – 1 + 2 = 1711
   
   
3. 3, 5, 10, ?, 92, 349
   1.38
   2.27
   3.56
   4.44
   5.62
   
   Answer & Explanation

   Answer – 2.27
   Explanation :
   3 + 1² + 1 = 5
   5 + 2² + 1 = 10
   10 + 4² + 1 = 27
   
   
4. 5, 8, 15, 37, ?, 309.5
   1.99.5
   2.97.5
   3.94.5
   4.98.5
   5.96.5
   
   Answer & Explanation

   Answer – 1.99.5
   Explanation :
   5 * 1 + 2 + 1 = 8
   8 * 1.5 + 4 – 1 = 15
   15 * 2 + 6 + 1 = 37
   37 * 2.5 + 8 – 1 = 99.5
   99.5 * 3 + 10 + 1 = 309.5
   
   
5. 3, ?, 13, 39, 87, 169
   1.9
   2.5
   3.6
   4.7
   5.2
   
   Answer & Explanation

   Answer – 2.5
   Explanation :
   3 + 1² + 1= 5
   5 + 3² – 1= 13
   13 + 5² + 1= 39……..
   
   
6. 6, 7, 16, ?, 218, 1099
   1.33
   2.53
   3.38
   4.24
   5.44
   
   Answer & Explanation

   Answer – 2.53
   Explanation :
   6*1 – 1 + 2 = 7
   7*2 – 2 + 4 = 16
   16*3 – 1 + 6 = 53
   
   
7. 3, 2, 14, 35, 107, ?
   1.232
   2.218
   3.222
   4.225
   5.242
   
   Answer & Explanation

   Answer – 3.222
   Explanation :
   3 + 1³ – 2 = 2
   2 + 2³ + 4 = 14
   14 + 3³ – 6 = 35
   35 + 4³ + 8 = 107
   
   
8. 1, 3, 15, 55, ?, 899
   1.275
   2.227
   3.265
   4.283
   5.255
   
   Answer & Explanation

   Answer – 2.227
   Explanation :
   1 * 4 – 1 = 3
   3 * 4 + 3 = 15
   15 * 4 – 5 = 55
   55 * 4 + 7 = 227
   227 * 4 – 9 = 899
   
   
9. 2, ?, 8, 10, 28, 46
   1.2
   2.5
   3.7
   4.8
   5.9
   
   Answer & Explanation

   Answer – 1.2
   Explanation :
   2*2 – 2 = 2
   2*2 + 4 = 8
   8*2 – 6 = 10
   
   
10. 4, 6, 6, 8, 112, ?
    1.540
    2.580
    3.550
    4.570
    5.520
    
    Answer & Explanation

    Answer – 4.570
    Explanation :
    4 * 1 + 2 = 6
    6 * 2 – 4 = 8
    8 * 3 + 6 = 30
    30 * 4 – 8 = 112
    112 * 5 + 10 = 570