Number Series


Direction: What should come in place of question mark (?) in the following number series?

  1. 499, 622, 868, 1237, 1729, 2344, ?
    1. 3205
    2. 3082
    3. 2959
    4. 3462
    5. 2876

  1. View Hint View Answer Discuss in Forum

    The series is + 123, + (123 x 2), +(123 x 3), + (123 x 4), ...

    Correct Option: B

    The series is + 123, + (123 x 2), +(123 x 3), + (123 x 4), ...


  1. 8, 31, 122, 485, 1936, 7739, ?
    1. 30950
    2. 46430
    3. 34650
    4. 42850
    5. 38540

  1. View Hint View Answer Discuss in Forum

    The series is x 4 -1, x 4 - 2, x 4 - 3, x 4 - 4, ....,

    Correct Option: A

    The series is x 4 -1, x 4 - 2, x 4 - 3, x 4 - 4, ....,



  1. 274, 301, 426, 769, 1498, 2824, 5026
    1. 301
    2. 426
    3. 769
    4. 2824
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The series is ;
    + 33, + 53, + 73, + 93, + 113, + 133, ............

    Correct Option: D

    The series is ;
    + 33, + 53, + 73, + 93, + 113, + 133, ............


  1. 14, 22, 34.5, 55.5, 87.25, 135.875, 209.125
    1. 55.5
    2. 34.5
    3. 135.875
    4. 87.25
    5. None of these

  1. View Hint View Answer Discuss in Forum

    None of these

    Correct Option: E

    None of these



Direction: In each of these questions a number series is given. Only one number is wrong in each series. You have to find out the wrong number.

  1. 10 ,15 , 24 , 35 , 54 ,75 ,100
    1. 35
    2. 75
    3. 24
    4. 15
    5. 54

  1. View Hint View Answer Discuss in Forum

    The given series is in the below pattern,
    First term = 10
    Second term = First term + 5 = 15
    Third term = Second term + 9 = 24
    Similarly , we can calculate all others terms also.

    Correct Option: A

    The given series is in the below pattern,
    First term = 10
    Second term = First term + 5 = 15
    Second term = 10 + 5 =15 ,
    Third term = Second term + 9 = 24
    Third term = 15 + 9 = 24 ,
    Similarly , we can find the all others terms also.
    24 + 13 = 35, is wrong. It should be 37.
    Fourth term = Third term + 13 = 37 + 17 = 54 ,
    Fifth term = Fourth term + 17 = 54 + 21 = 75 ,
    Sixth term = Fifth term + 21 = 75 + 25 = 100
    The difference in successive nos. 9 – 5 = 13 – 9 = 17 – 13 = 21 - 17 = 4.
    Hence, 35 is wrong. It should be 37.