Month: July 2014

IBM Ponder This 07-14 Solved

Credited with solving this puzzle: Ponder This Challenge: 32 pebbles are placed on the six edges of a tetrahedron, as shown in the following figure. Two players are playing a game. Each player, on her turn, can take as many pebbles as she chooses, but a minimum of one pebble must be taken each turn, […]

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Balancing a Triangle

I recall I was taking a shower and was thinking about the mathematics of mobiles, something for another post, but during this I got to thinking about how to generalize a formula for finding the point to balance a triangle such that it would hang like this: I sorted most of it out in my […]

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