Octagon Number Puzzle: What Replaces the ? (中文)
An octagon has 8 numbers around its border and 17 in the centre. Which number replaces the question mark?
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An octagon has 8 numbers around its border and 17 in the centre. Which number replaces the question mark?
暂无解答，赶快成为第一个贡献者！
有不同的解题思路？分享您的解析。