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

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