Question:

How dO Yu DO tHIS?pLEASe I NEED HElp?

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You have 5 small chains with 4 links. If it costs 10 cents to open a link and 10 cents to close a link, how would form a circular chain with only 80 cents ?

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  1. Open all 4 links on one of chains,

    and use them to connect the other four.

    4 opens, 4 closes.

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