Quantitative Aptitude: Number Series Set 17

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

  1. 2, 7, 29, 109, 319, ?
    A) 724
    B) 704
    C) 629
    D) 835
    E) 853
    View Answer
    Option C
    Pattern:
    2 × 6 – 5 = 7,
    7 × 5 – 6 = 29,
    29 × 4 – 7 = 109, 
    109 × 3 – 8 = 319, 
    319 × 2 – 9 = 629
  2. 729, 243, 162, 162, 216, ?
    A) 555
    B) 456
    C) 782
    D) 360
    E) 685
    View Answer
    Option D
    Pattern:
     × 1/3, × 2/3, × 3/3, × 4/3, × 5/3
  3. 216, 95, 176, 127, 152, ?
    A) 112
    B) 101
    C) 143
    D) 120
    E) 132
    View Answer
    Option C
    Pattern:
    -112, + 92, -72, +52, -32
  4. 3, 3, 7, 25, 73, ?
    A) 155
    B) 173
    C) 135
    D) 196
    E) 185
    View Answer
    Option B
    Pattern:
    3 + (12 * 0) = 3
    3 + (22 * 1) = 7
    7 + (32 * 2) = 25
    25 + (42 * 3) = 73  
    73 + (52 * 4) = 173  
  5. 16, 20, 39, 83, ?, 286
    A) 195
    B) 190
    C) 140
    D) 158
    E) 162
    View Answer
    Option E
    Pattern:
    16………. 20……….. 39…………. 83………. 162……….. 286
    .    +4          +19           +44            +79          +124       
    .           +15          +25           +35          +45
  6. 16, 20, 34, 28, 52, ?
    A) 36
    B) 45
    C) 67
    D) 84
    E) 72
    View Answer
    Option A
    Pattern:
    16………. 20……….. 34…………. 28………. 52……….. 36
    .    +4           +14           -6              +24             -16       
    .           +10          -20          +30             -40
  7. 26, 20, 37, 29, 48, 38, ?
    A) 62
    B) 59
    C) 71
    D) 54
    E) 75
    View Answer
    Option B
    Pattern:
    Two series
    26 + 11 = 37, 37+11 = 48, 48+11 = 59
    20+9 = 29, 29+9 = 38
  8. 33, 37, 28, 44, 19, ?
    A) 66
    B) 59
    C) 34
    D) 42
    E) 55
    View Answer
    Option E
    Pattern:
    +22, -32, +42, -52, +62
  9. 8, 20, 56, 164, 488, ?
    A) 1387
    B) 1345
    C) 1460
    D) 1430
    E) 1428
    View Answer
    Option C
    Pattern:
    *3 – 4, *3 – 4, *3 – 4,  *3 – 4,  *3 – 4  
  10. 4, 10, 14, 48, 186, ?
    A) 570
    B) 688
    C) 753
    D) 862
    E) 936
    View Answer
    Option E
    Pattern:
    4 × 1 + 6 = 10,
    10 × 2 – 6 = 14,  
    14 × 3 + 6 = 48,  
    48 × 4 – 6 = 186,  
    186 × 5 + 6 = 936   

 

 

 

 

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