Truth-seeking

https://brilliant.org/practice/harder-challenges/?p=6

I feel like the answer and explanation are incorrect. Choose either chest would be able to determine where 100 gold is.

From the question, we can deduce the following - A must have either 50 gold/50 silver or 100 silver. - B must have either 100 gold or 100 silver. - C must have either 50 gold/50 silver or 100 gold.

Suppose we choose chest B: - If the coin is gold, B must be gold. (A = 100 silver, B = 100 gold, C = 50 gold/ 50 silver) - If the coin is silver, C must be gold since A couldn't be gold. (A = 50 gold/ 50 silver, B = 100 silver, C = 100 gold)

Suppose we choose chest A: - If the coin is 50 gold/50 silver, C must be gold since C couldn't be silver. (A = 50 gold/ 50 silver, B = 100 silver, C = 100 gold) - If the coin is silver, B must be gold since B couldn't be 50 gold/50 silver. (A =100 silver, B = 100 gold, C = 50 gold/ 50 silver)

Suppose we choose chest C: - If the coin is gold, C must be gold. (A = 50 gold/ 50 silver, B = 100 silver, C = 100 gold) - If the coin is 50 gold/50 silver, B must be gold since B couldn't be 50 gold/50 silver. (A = 100 silver, B = 100 gold, C = 50 gold/ 50 silver)

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Truth-seeking

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