Quantitative Aptitude: Number Series Set 92

Directions(1-10): What will be the approximate value of “?” in the following questions.

  1. 226,346,?,654,846,1066
    488
    444
    432
    445
    420
    Option A
    11^2-1
    12^2-2
    13^2-3
    14^2-4
    15^2-5
    ? = 488

     

  2. 26,104,?,832,1664,6656
    202
    205
    208
    220
    210
    Option C
    *4
    *2
    *4
    *2
    *4
    ? = 208

     

  3. 3,732,?,1587,1803,1923
    1025
    1414
    1335
    1244
    1440
    Option D
    9^3
    8^3
    7^3
    6^3
    5^3
    ? = 1244

     

  4. 8,?,1322,1541,1650.5,1705.25
    884
    800
    745
    820
    755
    Option A
    +876
    +438
    +219
    +109.5
    +54.75
    ? = 884

     

  5. 136,748,3366,?,29452.5,44178.75
    14125
    11781
    10258
    12045
    13326
    Option B
    *5.5
    *4.5
    *3.5
    *2.5
    *1.5
    ? = 11781

     

  6. 15,30,50,80,130,220
    269
    235
    244
    220
    274
    Option D
    Double difference +15,+20,+30,+50,+90
    +5,+10,+20,+40
    ? = 220

     

  7. 9,6,9,24,108,?
    875
    850
    844
    891
    888
    Option E
    *0.5+1.5
    *1+3
    *2+6
    *4+12
    *8+24
    ? = 888

     

  8. 48,24,72,18,90,?
    15
    12
    10
    9
    8
    Option A
    /2
    *3
    /4
    *5
    /6
    ? = 15

     

  9. 7,10,18,42,90,?
    220
    205
    201
    210
    218
    Option D
    Difference
    3 = 2^2 – 1
    8 = 3^2 – 1
    24 = 5^2 – 1
    48 = 7^2 – 1
    120 = 11^2 – 1
    ? = 210

     

  10. 1511,302,75,24,?,5
    5
    4
    8
    6
    10
    Option E
    (1511-1)/5
    (302-2)/5
    (75-3)/5
    (24-4)/5
    (10-5)/5
    ? = 10

     


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