2000 PMWC Problems/Problem T5
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Problem
Each of 
children ranked 
kinds of chocolate (A, B, and C) in order of their preferences, with no absentions. Suppose 
children preferred B to C, 
preferred C to A, and 
preferred A to B, and all possible ordered of A, B, and C existed. Find the number of children who ranked A as their first preference.
