[中學] 排列組合
這幾題機率問題 請大大幫忙解囉
1.男女朋已相約下午5點到六點之間在公園見面,設兩人皆在五點至六點之間到達
若約定先到達的人要等15分鐘,若對方沒來便可離去,則兩人相遇的機率?
2.在邊長4公分的正方形內任取一點。這一點到四頂點的距離均不小於1公分的機率?
3.半徑為4的圓內任取一點P,求此點與圓周之距離大於3之機率?
4.半徑為3的球內任取一點Q。球此點與球面之距離大於1的機率?
謝謝大大囉!!!
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◆ From: 122.123.99.163
推
10/31 12:35, , 1F
10/31 12:35, 1F
→
10/31 12:36, , 2F
10/31 12:36, 2F
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10/31 12:36, , 3F
10/31 12:36, 3F
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10/31 12:37, , 4F
10/31 12:37, 4F
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10/31 12:37, , 5F
10/31 12:37, 5F
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10/31 12:38, , 6F
10/31 12:38, 6F
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10/31 12:39, , 7F
10/31 12:39, 7F
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10/31 12:39, , 8F
10/31 12:39, 8F
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10/31 12:43, , 9F
10/31 12:43, 9F
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10/31 12:43, , 10F
10/31 12:43, 10F
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10/31 12:44, , 11F
10/31 12:44, 11F
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10/31 12:44, , 12F
10/31 12:44, 12F
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10/31 12:45, , 13F
10/31 12:45, 13F
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10/31 12:46, , 14F
10/31 12:46, 14F
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10/31 12:46, , 15F
10/31 12:46, 15F
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10/31 12:47, , 16F
10/31 12:47, 16F
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10/31 12:48, , 17F
10/31 12:48, 17F
推
10/31 16:22, , 18F
10/31 16:22, 18F
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10/31 22:01, , 19F
10/31 22:01, 19F
推
10/31 22:39, , 20F
10/31 22:39, 20F
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10/31 22:40, , 21F
10/31 22:40, 21F
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10/31 22:41, , 22F
10/31 22:41, 22F
推
11/01 22:53, , 23F
11/01 22:53, 23F
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11/01 22:57, , 24F
11/01 22:57, 24F
推
11/01 23:00, , 25F
11/01 23:00, 25F
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