You might need a pen and paper to help visualize this puzzle, which is featured in "Fundrum My Conundrum: A Book of Riddles" by Ray Epstein and Ben Kovler.

The Puzzle

The puzzle is categorized as medium difficulty. Can you solve it? The chain link puzzle goes as follows: You have 5 pieces of chain that each consist of 3 links. It costs 25 cents to open one link and weld it closed. What is the minimum it would cost to make one straight chain with all 15 links? Scroll down to read the answer.

ANSWER

The minimum cost to make one straight chain with all 15 links is 75 cents. You can open each in one group of chain and use them as connecting pieces. So, there will be a group of three links, one connector piece, another group of three links, another connector piece, one group of three links, another connector piece, and the final group of three links. Check out some of the videos below to keep solving more brain teasers.

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Written by Curiosity Staff October 20, 2016

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