Odd Man Out and Series


  1. 2, 4, 12, 48, 240, (...) ?
    1. 960
    2. 1440
    3. 1080
    4. 1920

  1. View Hint View Answer Discuss in Forum

    Go on multiplying the given numbers by 2, 3, 4, 5, 6. So, the correct next number is 1440.

    Correct Option: B

    Go on multiplying the given numbers by 2, 3, 4, 5, 6. So, the correct next number is 1440.


  1. 2, 6, 12, 20, 30, 42, 56, (...) ?
    1. 60
    2. 64
    3. 72
    4. 70

  1. View Hint View Answer Discuss in Forum

    The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8. So, the next number is 8 x 9 = 72.

    Correct Option: C

    The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8. So, the next number is 8 x 9 = 72.



  1. 3, 7, 15, 39, 63, 127, 255, 511 ?
    1. 7
    2. 15
    3. 39
    4. 63

  1. View Hint View Answer Discuss in Forum

    Go on multiplying 2 and adding 1 to get the next number. So, 39 is wrong.

    Correct Option: C

    Go on multiplying 2 and adding 1 to get the next number. So, 39 is wrong.


  1. 40960, 10240, 2560, 640, 200, 40, 10 ?
    1. 640
    2. 40
    3. 200
    4. 2560

  1. View Hint View Answer Discuss in Forum

    Go on dividing by 4 to get the next number. So, 200 is wrong.

    Correct Option: C

    Go on dividing by 4 to get the next number. So, 200 is wrong.



  1. 1, 1, 2, 6, 24, 96, 720 ?
    1. 720
    2. 96
    3. 24
    4. 6

  1. View Hint View Answer Discuss in Forum

    Go on multiplying with 1, 2, 3, 4, 5, 6 to get the next number. So, 96 is wrong.

    Correct Option: B

    Go on multiplying with 1, 2, 3, 4, 5, 6 to get the next number. So, 96 is wrong.