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Hà Đức Thọ moderators

14/06/2017 at 15:35
Answers
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A house has 10 rooms. Ten boys stay in different rooms and count the number of doors in them. After that they sum all results and receive 25. What a proposition can't be true about number N of doors which led outside the house?


double counting


    List of answers
  • ...
    tth 30/10/2017 at 15:14

    We have:

    25 do not divide to 10

    So 25 can't be true about number N of doors .

    Note: I'm not certain

  • ...
    Ma Kết 05/04/2018 at 14:42

    We have:

    25 do not divide to 10

    So 25 can't be true about number N of doors .

    Note: I'm not certain

  • ...
    Ma Kết 05/04/2018 at 14:41

    Hà Đức Thọ            


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