[問題] 兩個硬幣...
這是小學3年級的題目
說有兩個十圓硬幣...A不動...B繞著A..轉一圈...請問B自轉幾圈....
答案是2圈...
為啥...實地做也是2圈....可是不知道為什麼.....
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◆ From: 219.80.226.144
推
61.59.223.63 10/15, , 1F
61.59.223.63 10/15, 1F
推
140.114.25.36 10/15, , 2F
140.114.25.36 10/15, 2F
推
219.80.226.144 10/15, , 3F
219.80.226.144 10/15, 3F
推
61.229.30.229 10/15, , 4F
61.229.30.229 10/15, 4F
→
61.229.30.229 10/15, , 5F
61.229.30.229 10/15, 5F
推
134.208.40.13 10/15, , 6F
134.208.40.13 10/15, 6F
→
134.208.40.13 10/15, , 7F
134.208.40.13 10/15, 7F
推
61.70.101.253 10/15, , 8F
61.70.101.253 10/15, 8F
推
203.70.36.146 10/15, , 9F
203.70.36.146 10/15, 9F
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