Showing posts with label Christmas. Show all posts
Showing posts with label Christmas. Show all posts
Friday, 31 December 2010
Thursday, 24 December 2009
A Christmas puzzle
The decorations of our Christmas tree form a triangle. What is the minimum number of red balls you can move in order to see the triangle upside down? Merry Christmas to everybody!
SOLUTION
You need to move three. Look at the animation (by Leo)
Sunday, 20 December 2009
Tuesday, 15 December 2009
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