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  5. 我少算哪兩個？
Mathematics
Senior High
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我少算哪兩個？

下圖為一街道圖。求從A取捷徑走到B,共有多少種方法? 20 oB 3'2! 41 21x2: 3 6 10 126 7 60 !

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✨ Best Answer ✨

甯♥︎
甯♥︎

最外面的兩條吧
(右到底上去、上到底右轉)

:)
:)

謝謝

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