Number Series


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

  1. 435, 354, 282, 219, 165 ?
    1. 103
    2. 112
    3. 120
    4. 130
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The given series is -
    (9 x 9), - (9 x 8), - (9 x 7), - (9 x 6), - (9 x 5)

    Correct Option: C

    The given series is -
    (9 x 9), - (9 x 8), - (9 x 7), - (9 x 6), - (9 x 5)


  1. 4, 200, 369, 513, 634 ?
    1. 788
    2. 715
    3. 734
    4. 755
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The given series is
    + (14)2, + (13)2, + (12)2, + (11)2, + (10)2

    Correct Option: C

    The given series is
    + (14)2, + (13)2, + (12)2, + (11)2, + (10)2



  1. 11, 18, 29, 42, 59, 80, 101
    1. 42
    2. 18
    3. 29
    4. 59
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The series is + 7, + 11, + 13, + 17, + 19, + 23
    11 + 7 = 18, 18 + 11 = 29, 29 + 13 = 42, 42 + 17 = 59, 59 + 19 = 78, 78 + 23 = 101
    The wrong number is 34650; 17325 x 3 = 51975

    Correct Option: E

    The series is + 7, + 11, + 13, + 17, + 19, + 23
    11 + 7 = 18, 18 + 11 = 29, 29 + 13 = 42, 42 + 17 = 59, 59 + 19 = 78, 78 + 23 = 101
    The wrong number is 34650; 17325 x 3 = 51975


  1. 2, 9, 32, 105, 436, 2195, 13182
    1. 436
    2. 2195
    3. 9
    4. 32
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The series is ( + 7 x 1), (+ 6 x 2), (+ 5 x 3), (+ 4 x 4), (+ 3 x 5), (+ 2 x 6).
    The wrong number is 32;
    (9 + 6) x 2 = 15 x 2 = 30

    Correct Option: D

    The series is ( + 7 x 1), (+ 6 x 2), (+ 5 x 3), (+ 4 x 4), (+ 3 x 5), (+ 2 x 6).
    The wrong number is 32;
    (9 + 6) x 2 = 15 x 2 = 30



  1. 5, 55, 495, 3465, 17325, 34650, 51975
    1. 495
    2. 34650
    3. 55
    4. 17325
    5. None of these

  1. View Hint View Answer Discuss in Forum

    The series is x 11, x 7, x 5, x 3, x 1. The wrong no. is 34650; 17325 x 3 =51975

    Correct Option: B

    The series is x 11, x 7, x 5, x 3, x 1. The wrong no. is 34650; 17325 x 3 =51975