TVET CHNS,Eng,Maths
Senior High
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答案是18
3 教學範例
A201922
捷徑問題(二
如下圖之街道,規定其行走方向為「→」「↑」如
二種,試求由4至B且必經C之走法有幾種?
B
答
C
Answers
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