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Next number in sequence-game

  1. Nov 27, 2008 #1
    10 10 11 12 15 16 21
     
  2. jcsd
  3. Nov 27, 2008 #2
    22

    ?
     
  4. Nov 27, 2008 #3
    Why?
     
  5. Nov 27, 2008 #4
    22. because every second term in the sequence is seperated by 1. ie. 10 10 11 12 15 16 21
    is seperated by 0, 1, 1, 3, 1, 5, 1, hence 22, my guess is that the number after that will be 27 and then 28, etc etc.
     
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