
ants on a triangle  A simple solution
Ant A start to move in either one direction (clockwise or counter), the probability is 1;
Ant B moves in the same direction as A, probability is 1/2;
Ant C moves in the same direction as A, probability is 1/2;
3 ants move in the same direction, the probability is:
1*(1/2)*(1/2) = 1/4 = 0.25
Pan, Wenyu
Friday, September 20, 2002
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