Math Problem Statement
这是一个排列组合的算法题,题目是:从4个男同学,5个女同学中选出3个同学合影,必须满足男女都有,请问多少个选择方法?用python实现
Solution
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Math Problem Analysis
Mathematical Concepts
Combinatorics
Combinations
Probability
Formulas
C(n, k) = n! / (k!(n-k)!)
Total Methods = C(4, 1) * C(5, 2) + C(4, 2) * C(5, 1)
Theorems
Combination theorem
Suitable Grade Level
Grades 10-12
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