Quantitative Aptitude: Number Series Set 7

Directions: What will come in place of (?) in following series following a certain pattern?
 

1. 9, 73, 241, 561, ?
   A) 946
   B) 1036
   C) 1238
   D) 1081
   E) 1141
   
   View Answer

   Option D
   Pattern:
   1² + 2³, 3² + 4³, 5² + 6³, 7² + 8³
   
2. 3, 9, 19, 34, 55, ?
   A) 79
   B) 83
   C) 66
   D) 90
   E) 68
   
   View Answer

   Option B
   Pattern:
   3 + (1+2+3) = 9, 9 + (1+2+3+ 4) = 19, 19 + (1+2+3+ 4+5) = 34, 34 + (1+2+3+ 4+5+6) = 55, 55 + (1+2+3+ 4+5+6+7) = 83
   
3. 16, 14, 17, 12, 19, 8, ?
   A) 29
   B) 20
   C) 21
   D) 34
   E) 44
   
   View Answer

   Option C
   Pattern:
   -2, +3, -5, +7, -11, +13
   
4. 12, 53, 96, 143, 196, 255, ?
   A) 355
   B) 316
   C) 452
   D) 325
   E) 332
   
   View Answer

   Option B
   Pattern:
   +41, +43, +47, +53, +59, +61 – consecutive prim numbers addition
5. 48, 24, 36, 90, 315,
   A) 1767.5
   B) 1234.5
   C) 1113.5
   D) 1417.5
   E) 1218.5
   
   View Answer

   Option D
   Pattern:
   ×0.5, ×1.5, ×2.5, ×3.5, ×4.5,
6. 386, 265, 365, 284, 348, ?
   A) 257
   B) 176
   C) 299
   D) 175
   E) 224
   
   View Answer

   Option C
   Pattern:
   386 – 11², 386 + 10², 386 – 9², 386 + 8²
   
7. 20, 10, 8, 8.4, 10.4, ?
   A) 17.25
   B) 18.78
   C) 11.24
   D) 19.85
   E) 14.48
   
   View Answer

   Option E
   Pattern:
   20 × 2/5 + 2 = 10
   10 × 3/5 + 2 = 8
   8 × 4/5 + 2 = 8.4
   8.4 × 5/5 + 2 = 10.4
   10.4 × 6/5 + 2 = 14.48
   
8. 8, 18, 39, 82, ?, 344
   A) 169
   B) 192
   C) 111
   D) 120
   E) 144
   
   View Answer

   Option A
   Pattern:
   × 2 + 2, × 2 + 3, × 2 + 4, × 2 + 5, × 2 + 6,
   
9. 1, 3, 11, 13, 29, ?
   A) 35
   B) 47
   C) 26
   D) 31
   E) 43
   
   View Answer

   Option D
   Pattern:
   1² + 0, 2² – 1, 3² + 2, 4² – 3, 5² + 4
   
10. 16, 27, 42, 139, 542, ?
    A) 1220
    B) 2725
    C) 2311
    D) 1817
    E) 2112
    
    View Answer

    Option B
    Pattern:
    16 * 1 + 11 = 27
    27 * 2 – 12 = 42
    42 * 3 + 13 = 139
    139 * 4 – 14 = 542
    542 * 5 + 15 = 2725