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BrainDen.com - Brain Teasers


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About Caliban27

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  1. DOWRY

  2. Find the missing combination

    Merry Xmas to you both.
  3. The elusive chord

    I agree with CaptainEd. Jaynes' solution to the Bertrand paradox shows that random radius (method 2) is the only robust theoretical means of choosing random chord.
  4. easy one

    That won't work, 'cause 4*9 would be 17 not 21. A variation to that theme which would work is: if second number is smaller, then [first number] + twice [second number], else, [first number] + twice second number] - 1. That is quite inelegant, and does not solve for instance of both numbers the same. Back to thinking further outside cube.