Number Series


  1. 3, 7, 16, 32, 56, 93, 142











  1. View Hint View Answer Discuss in Forum

    The series is 22, + 32, + 42, + 52, + 62, + 72 .
    The wrong no. is 56; 32 + 52 = 32 + 25 = 57

    Correct Option: A

    The series is 22, + 32, + 42, + 52, + 62, + 72 .
    The wrong no. is 56; 32 + 52 = 32 + 25 = 57


  1. 4, 5, 12, 38, 160, 805, 4835











  1. View Hint View Answer Discuss in Forum

    The series is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4, x 5 + 5, x 6 + 6.
    The wrong no. is 38; 12 x 3 + 3 = 36 + 3 = 39

    Correct Option: C

    The series is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4, x 5 + 5, x 6 + 6.
    The wrong no. is 38; 12 x 3 + 3 = 36 + 3 = 39



Direction: In the following number series only one number is wrong. Find out the wrong number.

  1. 8, 11, 17, 47, 128, 371, 1100











  1. View Hint View Answer Discuss in Forum

    The series is x 3 - 13

    Correct Option: C

    The series is x 3 - 13


  1. 1, 5, 13, 31, 61, 125, 253











  1. View Hint View Answer Discuss in Forum

    The series is + 22, + 23, + 24, + 25, + 26, + 27

    Correct Option: C

    The series is + 22, + 23, + 24, + 25, + 26, + 27



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

  1. 9, 62, ?, 1854, 7415, 22244











  1. View Hint View Answer Discuss in Forum

    The series is x 7 - 1, x 6 -1, x 5 - 1, x 4 - 1, x 3 - 1

    Correct Option: D

    The series is x 7 - 1, x 6 -1, x 5 - 1, x 4 - 1, x 3 - 1