<ul><li>The challenge is to find the missing number in an arithmetic sequence given an array.</li><li>The sequence represents a series of numbers with a constant difference between consecutive terms.</li><li>Participants are encouraged to write their solutions, test them against the provided test cases, and share their approaches in the comments.</li><li>The challenge is part of the Daily JavaScript Challenge series, aimed at helping developers improve their programming skills.</li></ul>

Daily JavaScript Challenge #JS-56: Find Missing Number in Arithmetic Sequence

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