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simple maths question-
2017/06/17 05:22
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simple maths question?

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there are 13 boys and 17 girls in a class if a team of 32 girls and 2 boys are selected from the class to participate the voluntary services ,how many different teams can be formed? 答案係用C 利計 但點解唔可以用P利計 thank u very much. 更新: it should be 3 girls

最佳解答:

(17x16x15/3!)x(13x12/2!)=53040 女的組合數 x 男的組合數

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