Day 1: "Key"

Answer Checker:

Hints: Each of the five figures seems to be a version of the same basic shape. It's like a square with a cross in the middle. You can treat this shape as a "twelve-segment display," where each horizontal line and vertical half-line is either "lit up" or not. If we're looking at the segments that are lit up, what are the segments that aren't lit up?

Solution/Explanation

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