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Hard Number Series Aptitude Riddle

Hard Number Series Aptitude Riddle - 27 June

What is the next number in the series.

15 29 56 108 208 ?

For Solution : Click Here

11 comments:

  1. Difference between Number is 14,27,52,100
    Then 14*2-1 = 27
    27*2-2 = 52
    52*2 -4 = 100
    Each time doubling numbers like 1 ,2,4,8
    So on i got
    400 ANSWER

    ReplyDelete
  2. ANSWER FOR THIS RIDDLE WILLBE 400

    ReplyDelete
  3. 30* 0.5 = 15
    29*1 = 29
    28*2 = 56
    27 * 4 = 108
    26 * 8 = 208
    25 * 16 = 400

    ReplyDelete
  4. 400

    15*1 = 15
    15*2 = 30-1 = 29
    29*2 = 58-2 = 56
    56*2 = 112-4 = 108
    108*2 = 216-8 = 208
    208*2 = 416-16 = 400

    ReplyDelete
  5. 15 29 56 108 208 __ (768).
    768 is key for you .i think you can understand now.

    ReplyDelete