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Total questions: 6
Worksheet time: 4mins
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Worksheets3!=
6
10
20
30
C25=
6
10
20
30
P25=
6
10
20
30
將3枝相同的鉛筆、2枝相同的原子筆,排一直線有幾種?
P35=5×4×3
C35=2!3!5!
35≡3×3×3×3×3
53=5×5×5
從桌上5杯不同酒,選3杯來混成雞尾酒共有幾種?
P35=5×4×3
C35=2!3!5!
35≡3×3×3×3×3
53=5×5×5
婷婷、暄暄、淳淳 三人到屏東市旅行,晚上要投宿旅館,若只有兩間旅館可以選擇,則三人投宿旅館的方法有幾種可能?
2+3=5
2×3≡6
23=8
32=9
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