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BrainDen.com - Brain Teasers


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Everything posted by rocdocmac

  1. When midnight strikes

    Is Confucious still alive and well?
  2. Cubicle Stack #2

    Suppose 27 identical cubes are glued together to form a cubical stack, as illustrated below. If one of the small cubes is omitted, four distinct shapes are possible. If two of the small cubes are omitted rather than just one, twenty-two distinct shapes are possible (see previously submitted Cubicle Stack at BrainDen.com). Now, if three of the cubelets are omitted, how many distinct shapes are possible?
  3. Cubicle Stack #2

    That "19" was a typo, sorry! Latest included ...
  4. When midnight strikes

    Kicking of again, if I understand correctly ...
  5. Cubicle Stack #2

    ... and above 800 ...
  6. Physics fun

  7. Cubicle Stack #2

    @Thalia ... Virtually completed counting (4-cubelet removal). Still have to verify, but the total seems to be less than 840!
  8. Physics fun

  9. Physics fun

  10. Physics fun

  11. Physics fun

    Four feet in the air ...
  12. Physics fun

    Maybe far out, but still something to consider ...
  13. Physics fun

  14. Physics fun

  15. Physics fun

  16. What dus the poor man have

    Very old one (2007/8). Not new!
  17. I’m not a gardener