Enrichment problem
Place three piles of matches on a table, one with 11 matches, the second with 7, and the third with 6. You are to move matches so that each pile holds 8 matches. You may add to any pile only as many matches as it already contains, and all the matches must come from one other pile. For example, if a pile holds 6 matches, you may add 6 to it, no more or less. You have 3 moves.
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Educational media
Friday, April 28, 2006
Moving 3 piles of matches
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Answer:
At the beginning:
PileA 11
PileB 7
PileC 6
Move 7 matches from pileA to pileB:
PileA 4
PileB 14
PileC 6
Move 6 matches from pileB to pileC:
PileA 4
PileB 8
PileC 12
Move 4 matches from pileC to pileA:
PileA 8
PileB 8
PileC 8
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