姓名 ______________________日期 ____________得分 ____ / 12排列与组合练习排列与组合 · 1–12求方法数。简单替换1.10C4简单替换2.9C3简单替换3.10P2简单替换4.7P3简单替换5.10P3简单替换6.5P2简单替换7.7P5简单替换8.10C3简单替换9.9P3简单替换10.6P3简单替换11.9P2简单替换12.9C5答案 — 排列与组合练习排列与组合1.2102.843.904.2105.7206.207.2,5208.1209.50410.12011.7212.126由 Math Sheet Studio 制作 · mathsheetstudio.com — 免费可打印数学练习卷