Posers and Puzzles

Posers and Puzzles

Odd one out?

Standard memberwolfgang59
Posers and Puzzles 20 Sep '09 10:48
  1. Standard memberwolfgang59
    Quiz Master
    RHP Arms
    Joined
    09 Jun '07
    Moves
    48793
    20 Sep '09 10:481 edit
    Which of these numbers is the odd one out?
    331
    3,331
    33,331
    333,331
    3,333,331
    33,333,331
    333,333,331

    and why?
  2. F
    Standard memberFabianFnas
    Joined
    11 Nov '05
    Moves
    43938
    20 Sep '09 11:093 edits
    Originally posted by wolfgang59
    Which of these numbers is the odd one out?
    331
    3,331
    33,331
    333,331
    3,333,331
    33,333,331
    333,333,331

    and why?
    Guessing: Has it something to do with Reveal Hidden Content
    primes
    ?
  3. M
    Standard memberMephisto2
    Joined
    12 Mar '03
    Moves
    44411
    20 Sep '09 11:14
    333,333,331 is divisable by 17. The others are prime numbers ... I hope.
  4. Standard memberwolfgang59
    Quiz Master
    RHP Arms
    Joined
    09 Jun '07
    Moves
    48793
    20 Sep '09 13:50
    Yep! Pretty amazing .... only just come across this phenomenon.
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